chore(renovate): Prevent auto-updates of gh-aw (#7972)

- Stop automatically updating dependencies of `gh-aw` related stuff
- Mend Renovate have no ability to distinguish stable and pre-release
- Manual update via `gh aw upgrade` is preffered

Assisted-by: vscode-copilot-chat:deepseek-flash codegraph

Signed-off-by: ❤是纱雾酱哟～ <49941141+Dragon1573@users.noreply.github.com>

renovate.json

@@ -56,6 +56,12 @@
       "matchFileNames": [".github/workflows/*.lock.yml"],
       "enabled": false
     },
+    {
+      "description": "Ignore gh-aw dependency updates in workflow files; upgrade agentic workflows with gh aw upgrade instead",
+      "matchFileNames": [".github/workflows/**"],
+      "matchPackageNames": ["/gh-aw/"],
+      "enabled": false
+    },
     {
       "description": "Skip TypeScript 7.0 series",
       "matchManagers": ["npm"],