chore: drop year from copyright notices

Signed-off-by: Giles Cope <gilescope@gmail.com>

Author: gilescope

.license_headers.sh

@@ -18,7 +18,7 @@ while IFS= read -r -d '' file; do
   {
     printf '%s\n' '---'
     printf "SPDX-License-Identifier: Apache-2.0\n"
-    printf 'copyright: This file is part of midnight-docs. Copyright (C) 2025 Midnight Foundation. Licensed under the Apache License, Version 2.0 (the "License"); You may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.'
+    printf 'copyright: This file is part of midnight-docs. Copyright (C) Midnight Foundation. Licensed under the Apache License, Version 2.0 (the "License"); You may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.'
     printf '\n'
     sed '1d' "$file"
   } > "$tmpfile"

.midnight.txt

@@ -1,5 +1,5 @@
 This file is part of midnight-docs.
-Copyright (C) 2025 Midnight Foundation
+Copyright (C) Midnight Foundation
 SPDX-License-Identifier: Apache-2.0
 Licensed under the Apache License, Version 2.0 (the "License");
 You may not use this file except in compliance with the License.

CONTRIBUTING.md

@@ -45,7 +45,7 @@ Ensure the title is a clear summary of the requirement and provides enough conte
 
 ```
 // This file is part of <REPLACE WITH REPOSITORY NAME>.
-// Copyright (C) 2025 Midnight Foundation
+// Copyright (C) Midnight Foundation
 // SPDX-License-Identifier: Apache-2.0
 // Licensed under the Apache License, Version 2.0 (the "License");
 // You may not use this file except in compliance with the License.

academy/index.mdx

@@ -1,6 +1,6 @@
 ---
 SPDX-License-Identifier: Apache-2.0
-copyright: This file is part of midnight-docs. Copyright (C) 2025 Midnight Foundation. Licensed under the Apache License, Version 2.0 (the "License"); You may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
+copyright: This file is part of midnight-docs. Copyright (C) Midnight Foundation. Licensed under the Apache License, Version 2.0 (the "License"); You may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
 title: Midnight Developer Academy
 id: index
 displayed_sidebar: academySidebar

academy/module-1.mdx

@@ -1,6 +1,6 @@
 ---
 SPDX-License-Identifier: Apache-2.0
-copyright: This file is part of midnight-docs. Copyright (C) 2025 Midnight Foundation. Licensed under the Apache License, Version 2.0 (the "License"); You may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
+copyright: This file is part of midnight-docs. Copyright (C) Midnight Foundation. Licensed under the Apache License, Version 2.0 (the "License"); You may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
 id: module-1
 title: Introduction to Blockchain Technology
 displayed_sidebar: academySidebar

academy/module-2.mdx

@@ -1,6 +1,6 @@
 ---
 SPDX-License-Identifier: Apache-2.0
-copyright: This file is part of midnight-docs. Copyright (C) 2025 Midnight Foundation. Licensed under the Apache License, Version 2.0 (the "License"); You may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
+copyright: This file is part of midnight-docs. Copyright (C) Midnight Foundation. Licensed under the Apache License, Version 2.0 (the "License"); You may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
 id: module-2
 title: Cryptography and Smart Contracts
 displayed_sidebar: academySidebar

academy/module-3.mdx

@@ -1,6 +1,6 @@
 ---
 SPDX-License-Identifier: Apache-2.0
-copyright: This file is part of midnight-docs. Copyright (C) 2025 Midnight Foundation. Licensed under the Apache License, Version 2.0 (the "License"); You may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
+copyright: This file is part of midnight-docs. Copyright (C) Midnight Foundation. Licensed under the Apache License, Version 2.0 (the "License"); You may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
 id: module-3
 title: Zero-Knowledge Proofs (ZKPs)
 displayed_sidebar: academySidebar

academy/module-4.mdx

@@ -1,6 +1,6 @@
 ---
 SPDX-License-Identifier: Apache-2.0
-copyright: This file is part of midnight-docs. Copyright (C) 2025 Midnight Foundation. Licensed under the Apache License, Version 2.0 (the "License"); You may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
+copyright: This file is part of midnight-docs. Copyright (C) Midnight Foundation. Licensed under the Apache License, Version 2.0 (the "License"); You may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
 id: module-4
 title: Kachina Protocol
 displayed_sidebar: academySidebar

academy/module-5.mdx

@@ -1,6 +1,6 @@
 ---
 SPDX-License-Identifier: Apache-2.0
-copyright: This file is part of midnight-docs. Copyright (C) 2025 Midnight Foundation. Licensed under the Apache License, Version 2.0 (the "License"); You may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
+copyright: This file is part of midnight-docs. Copyright (C) Midnight Foundation. Licensed under the Apache License, Version 2.0 (the "License"); You may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
 id: module-5
 title: Developing on Midnight
 displayed_sidebar: academySidebar

academy/module-6.mdx

@@ -1,6 +1,6 @@
 ---
 SPDX-License-Identifier: Apache-2.0
-copyright: This file is part of midnight-docs. Copyright (C) 2025 Midnight Foundation. Licensed under the Apache License, Version 2.0 (the "License"); You may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
+copyright: This file is part of midnight-docs. Copyright (C) Midnight Foundation. Licensed under the Apache License, Version 2.0 (the "License"); You may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
 id: module-6
 title: Building Decentralized Applications (DApps) on Midnight
 displayed_sidebar: academySidebar