Bump actions/setup-java from 3 to 4 (#946)

Author: dependabot[bot]

.github/workflows/maven.yml

@@ -21,7 +21,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Set up JDK ${{ matrix.java }}
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@v4
         with:
           distribution: 'zulu'
           java-version: ${{ matrix.java }}