Update project and dependencies (#91)

* Upgrade project and dependencies

* Update bitcoin-kmp to 0.22.1 and secp256k1-kmp to 0.17.1

Author: sstone

.github/workflows/main.yml

@@ -15,10 +15,10 @@ jobs:
     steps:
     - uses: actions/checkout@v4
 
-    - name: Set up JDK 11
+    - name: Set up JDK 21
       uses: actions/setup-java@v4
       with:
-        java-version: 11
+        java-version: 21
         distribution: 'adopt'
 
     - name: Cache Maven dependencies
@@ -29,7 +29,7 @@ jobs:
         restore-keys: ${{ runner.os }}-m2
 
     - name: Build
-      run: mvn install -DskipTests
+      run: ./mvnw install -DskipTests
 
     - name: Test with libsecp256k1
-      run: mvn test
+      run: ./mvnw test

.mvn/wrapper/maven-wrapper.jar

@@ -0,0 +1,23 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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.
+wrapperVersion=3.3.2
+distributionType=script
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.9/apache-maven-3.9.9-bin.zip
+distributionSha256Sum=4ec3f26fb1a692473aea0235c300bd20f0f9fe741947c82c1234cefd76ac3a3c
+wrapperUrl=https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.3.2/maven-wrapper-3.3.2.jar
+wrapperSha256Sum=3d8f20ce6103913be8b52aef6d994e0c54705fb527324ceb9b835b338739c7a8
+