tools: use ubuntu-latest for public lint-js-and-md jobs

Use ubuntu-latest in public repositories to reduce runtime and
provide more headroom when the ESLint cache cannot be restored.

Keep ubuntu-slim in private repositories to avoid increasing
runner costs.

Assisted-by: Codex
Signed-off-by: inoway46 <inoueyuya416@gmail.com>
PR-URL: #66409
Refs: #64972
Reviewed-By: Mike McCready <66998419+MikeMcC399@users.noreply.github.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>

Author: inoway46

.github/workflows/linters.yml

@@ -98,7 +98,7 @@ jobs:
           fi
   lint-js-and-md:
     if: github.event.pull_request.draft == false
-    runs-on: ubuntu-slim
+    runs-on: ${{ github.event.repository.private && 'ubuntu-slim' || 'ubuntu-latest' }}
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
         with: