Update gradle/actions action to v4

Author: renovate[bot]

.github/workflows/gradle.yml

@@ -20,7 +20,7 @@ jobs:
         with:
           java-version: '17'
           distribution: 'zulu'
-      - uses: gradle/actions/wrapper-validation@v3
+      - uses: gradle/actions/wrapper-validation@v4
 
       # Configure Gradle for optimal use in GitHub Actions, including caching of downloaded dependencies.
       # See: https://github.com/gradle/actions/blob/main/setup-gradle/README.md