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

Author: renovate[bot]

.github/workflows/gradle.yml

@@ -20,6 +20,6 @@ jobs:
         java-version: '17'
         distribution: 'temurin'
     - name: Setup Gradle
-      uses: gradle/actions/setup-gradle@0723195856401067f7a2779048b490ace7a47d7c # v5.0.2
+      uses: gradle/actions/setup-gradle@50e97c2cd7a37755bbfafc9c5b7cafaece252f6e # v6.1.0
     - name: Build with Gradle
       run: ./gradlew build