Merge pull request #2 from MBoegers/java-21-update

Java 21 update

.github/workflows/gradleCI.yml

@@ -13,9 +13,5 @@ jobs:
         with:
           java-version: '21-ea'
           distribution: 'temurin'
-      - name: Validate Gradle wrapper
-        uses: gradle/wrapper-validation-action@v1
-      - name: Build with Gradle
-        uses: gradle/gradle-build-action@v2
-        with:
-          arguments: build
+      - name: Run the Maven verify phase
+        run: ./mvnw --batch-mode --update-snapshots verify

.mvn/wrapper/maven-wrapper.properties

@@ -0,0 +1,18 @@
+# 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.
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.2/apache-maven-3.9.2-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.2.0/maven-wrapper-3.2.0.jar