Update Gradle to 9.3.1, Netty to 4.2.10 and Kotlin to 2.3.10

.gitea/workflows/build.yaml

@@ -9,8 +9,6 @@ jobs:
     steps:
       - name: Checkout sources
         uses: actions/checkout@v4
-      - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v3
       - name: Execute Gradle build
         run: ./gradlew build
       - name: Prepare Docker image build