ci: add clean to fix caching issues

Author: zaneschepke

.github/workflows/release.yml

@@ -54,6 +54,9 @@ jobs:
         with:
           creds: '{"clientId":"${{ secrets.AZURE_CLIENT_ID }}","clientSecret":"${{ secrets.AZURE_CLIENT_SECRET }}","subscriptionId":"${{ secrets.AZURE_SUBSCRIPTION_ID }}","tenantId":"${{ secrets.AZURE_TENANT_ID }}"}'
 
+      - name: Gradle clean
+        run: ./gradlew clean
+
       - name: Build & Publish Release
         run: ./gradlew buildConveyorSiteRelease
         env: