ci: use ubuntu latest for all expect nightly build

.github/workflows/wpt.yml

@@ -44,7 +44,7 @@ jobs:
     # Don't run the CI with draft PR.
     if: github.event.pull_request.draft == false
 
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-latest
 
     steps:
       - uses: actions/checkout@v4
@@ -86,7 +86,7 @@ jobs:
     # Don't execute on PR
     if: github.event_name != 'pull_request'
 
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-latest
     container:
       image: ghcr.io/lightpanda-io/perf-fmt:latest
       credentials: