ci: Switch from ubuntu-latest to namespace (2) (#36702)

In response to ongoing [github actions
incident](https://www.githubstatus.com/incidents/c7kq3ctclddp)

Supercedes: https://github.com/zed-industries/zed/pull/36698

Release Notes:

- N/A

.github/workflows/danger.yml

@@ -12,7 +12,7 @@ on:
 jobs:
   danger:
     if: github.repository_owner == 'zed-industries'
-    runs-on: ubuntu-latest
+    runs-on: namespace-profile-2x4-ubuntu-2404
 
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4