ci: add ubuntu-latest to workflow jobs configuration

.gitea/workflows/ci.yml

@@ -26,6 +26,7 @@ jobs:
               - '.gitea/workflows/**'
 
   checkstyle:
+    runs-on: ubuntu-latest
     name: "Checkstyle Main"
     needs: changed_files
     if: ${{ needs.changed_files.outputs.backend == 'true' || needs.changed_files.outputs.workflow == 'true' }}
@@ -54,26 +55,27 @@ jobs:
             echo "Cache miss! Running checkstyle check"
             echo "cache-hit=false" >> $GITHUB_OUTPUT
           fi
-      
+
       - name: "Run checkstyle"
         if: steps.check-cache.outputs.cache-hit != 'true'
         working-directory: ./backend
         run: |
           gradle checkstyleMain
-          
+
       - name: "Cache checkstyle results"
         if: steps.check-cache.outputs.cache-hit != 'true'
         uses: actions/upload-artifact@v4
         with:
           name: checkstyle-results
           path: backend/build/reports/checkstyle
-          
+
       - name: "Stop Gradle"
         if: steps.check-cache.outputs.cache-hit != 'true'
         working-directory: ./backend
         run: gradle --stop
 
   eslint:
+    runs-on: ubuntu-latest
     name: eslint
     needs: changed_files
     if: ${{ needs.changed_files.outputs.frontend == 'true' || needs.changed_files.outputs.workflow == 'true' }}
@@ -102,6 +104,7 @@ jobs:
           bun run lint
 
   prettier:
+    runs-on: ubuntu-latest
     name: prettier
     needs: changed_files
     if: ${{ needs.changed_files.outputs.frontend == 'true' || needs.changed_files.outputs.workflow == 'true' }}
@@ -130,6 +133,7 @@ jobs:
           bun run format:check
 
   test-build:
+    runs-on: ubuntu-latest
     name: test-build
     needs: changed_files
     if: ${{ needs.changed_files.outputs.frontend == 'true' || needs.changed_files.outputs.workflow == 'true' }}