chore(deps): update gradle/actions action to v6

Author: renovate[bot]

.github/workflows/build.yml

@@ -10,7 +10,7 @@ jobs:
     name: Gradle Setup
     steps:
       - uses: actions/checkout@v6
-      - uses: gradle/actions/wrapper-validation@v5
+      - uses: gradle/actions/wrapper-validation@v6
       - name: Set up JDK 17
         uses: actions/setup-java@v5
         with: