fix ci to be compatible with gitea

.gitea/workflows/build.yml

@@ -8,23 +8,25 @@ on: [pull_request, push]
 
 jobs:
   build:
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-latest
     steps:
       - name: checkout repository
         uses: actions/checkout@v6
-      - name: validate gradle wrapper
-        uses: gradle/actions/wrapper-validation@v6
       - name: setup jdk
         uses: actions/setup-java@v5
         with:
           java-version: '25'
           distribution: 'microsoft'
+      - name: setup gradle
+        uses: gradle/actions/setup-gradle@v6
+        with:
+          cache-provider: 'basic'
       - name: make gradle wrapper executable
         run: chmod +x ./gradlew
       - name: build
         run: ./gradlew build
       - name: capture build artifacts
-        uses: actions/upload-artifact@v7
+        uses: https://gitea.com/actions/gitea-upload-artifact@v4
         with:
           name: Artifacts
           path: build/libs/