Enable Configuration Cache for Dokka

Author: MGaetan89

.github/workflows/quality.yml

@@ -166,5 +166,7 @@ jobs:
           distribution: 'temurin'
       - name: Set up Gradle
         uses: gradle/actions/setup-gradle@v4
+        with:
+          cache-encryption-key: ${{ secrets.GRADLE_CACHE_ENCRYPTION_KEY }}
       - name: Generate documentation
         run: ./gradlew :dokkaGenerate