[CI] Use GitHub-hosted machines for clang-format job

I think clang-format job pollutes self-hosted runners with files, which other jobs can't remove due to different file permissions.

Alternative solution to consider: use our own cached checkout + cleanup actions instead of GitHub action.

Author: bader

.github/workflows/sycl_precommit.yml

@@ -28,7 +28,7 @@ permissions:
 
 jobs:
   lint:
-    runs-on: Linux
+    runs-on: ubuntu-20.04
     container:
       image: ghcr.io/intel/llvm/sycl_ubuntu2004_nightly:no-drivers
     steps: