⚰️ Replace deprecated GH action

Author: tobi-laa

.github/workflows/maven-publish.yml

@@ -30,7 +30,7 @@ jobs:
           tag: ${{ github.event.release.tag_name }}
           generateReleaseNotes: true
       - name: Validate Gradle wrapper
-        uses: gradle/wrapper-validation-action@f9c9c575b8b21b6485636a91ffecd10e558c62f6
+        uses: gradle/actions/wrapper-validation@v4
       - name: Set up Java for publishing to Maven Central Repository
         uses: actions/setup-java@c5195efecf7bdfc987ee8bae7a71cb8b11521c00 # v4
         with: