update to actions/setup-java@v4

Author: stefanseifert

.github/workflows/maven-build.yml

@@ -28,7 +28,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Setup JDK
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@v4
         with:
           distribution: ${{ matrix.distribution }}
           java-version: ${{ matrix.java }}