Merge pull request #57 from OpenElements/dependabot/github_actions/actions/setup-java-4

Bump actions/setup-java from 3 to 4

Author: hendrikebbers

.github/workflows/maven.yml

@@ -24,7 +24,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Set up JDK 21
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@v4
         with:
           java-version: '21'
           distribution: 'temurin'