Merge pull request #9 from ClickSend/fix/publish

chore: upgrade gradle version

Author: niharaCS

.github/workflows/publish.yml

@@ -14,8 +14,10 @@ jobs:
       with:
         java-version: '11'
         distribution: 'temurin'
+    - name: Upgrade Gradle wrapper
+      run: chmod +x gradlew && ./gradlew wrapper --gradle-version=8.6
     - name: Publish to Github registry
       env: 
         GPR_USER: ClickSend
         GPR_API_KEY: ${{ secrets.GPR_TOKEN }}
-      run: chmod +x gradlew && ./gradlew publish
+      run: ./gradlew publish