chore: update release-please.yml (#89)

Author: shubha-rajan

.github/workflows/release-please.yml

@@ -1,14 +1,28 @@
- on:
-   push:
-     branches:
-       - $default-branch
- name: release-please
- jobs:
-   release-please:
-     runs-on: ubuntu-latest
-     steps:
-       - uses: GoogleCloudPlatform/[email protected]
-         with:
-           token: ${{ secrets.GITHUB_TOKEN }}
-           release-type: python
-           package-name: cloud-sql-python-connector
+# Copyright 2021 Google LLC
+#
+# 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.
+
+name: release-please
+on:
+ push:
+   branches:
+     - $default-branch
+jobs:
+ release-please:
+   runs-on: ubuntu-latest
+   steps:
+     - uses: GoogleCloudPlatform/[email protected]
+       with:
+         token: ${{ secrets.GITHUB_TOKEN }}
+         release-type: python
+         package-name: cloud-sql-python-connector