Merge pull request #1471 from actix/ci/ubuntu-slim-assessment

ci: run rustfmt on ubuntu-slim

Author: robjtede

.github/workflows/clippy-fmt.yml

@@ -27,7 +27,7 @@ jobs:
     name: rustfmt check
     permissions:
       contents: read
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-slim
 
     steps:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1