chore: Upgrade checkout action to v4 and set up JDK 11 in CI workflow

Author: bpauli

.github/workflows/maven-deploy-cm.yml

@@ -38,9 +38,15 @@ jobs:
       commit: ${{ steps.getCommit.outputs.commit }}
     steps:
       # Checkout this project into a sub folder
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           path: archetype
+      # Set up JDK 11
+      - name: Set up JDK 11
+        uses: actions/setup-java@v3
+        with:
+          distribution: temurin
+          java-version: '11'
       # Set up dependency cache
       - name: Cache local Maven repository
         uses: actions/cache@v2
@@ -53,6 +59,7 @@ jobs:
       - name: Install archetype snapshot and store version in a variable
         run: |
           cd archetype
+          mvn --version
           mvn clean install -Darchetype.test.skip
           echo "ARCHETYPE_VERSION=$(mvn -q -Dexec.executable=echo -Dexec.args='${project.version}' --non-recursive exec:exec)" >> $GITHUB_ENV
           echo "ARCHETYPE_COMMIT=$(git rev-parse HEAD)" >> $GITHUB_ENV