Enable Gradle cache for Dokka in quality.yml

Author: MGaetan89

.github/workflows/quality.yml

@@ -111,5 +111,7 @@ jobs:
         with:
           java-version: '17'
           distribution: 'temurin'
+      - name: Set up Gradle
+        uses: gradle/actions/setup-gradle@v4
       - name: Generate documentation
         run: ./gradlew :dokkaGenerate