fix: change Gitea Actions runner from self-hosted to host runner, preventing stuck jobs when self-hosted runners are offline

.gitea/workflows/test-runner.yaml

@@ -3,7 +3,7 @@ on: [push]
 
 jobs:
   test-job:
-    runs-on: self-hosted
+    runs-on: []
     steps:
       - name: Check Host Environment
         run: |