Merge pull request '[CHORE] Gitea CI 워크플로우 runs-on 라벨 수정' (#5) from feature/ci-runner-update into main

Reviewed-on: http://178.104.200.7/kjh2064/QuantEngineByItz/pulls/5

.gitea/workflows/snapshot_admin.yml

@@ -17,7 +17,7 @@ jobs:
   # Push-only smoke gate: no deployment, no web UI smoke, no long-running side effects.
   validate-snapshot-admin-smoke:
     if: github.event_name == 'push'
-    runs-on: self-hosted
+    runs-on: ubuntu-latest
     steps:
       - name: Checkout Code
         run: |
@@ -58,7 +58,7 @@ jobs:
   # Manual dispatch gate: full workflow + web UI validation only.
   validate-snapshot-admin-full:
     if: github.event_name == 'workflow_dispatch'
-    runs-on: self-hosted
+    runs-on: ubuntu-latest
     steps:
       - name: Checkout Code
         run: |