Update clang-format.yml

Author: actboy168

.github/workflows/clang-format.yml

@@ -8,7 +8,11 @@ on:
     - master
 jobs:
   clang-format:
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, ubuntu-slim]
     steps:
       - uses: actions/checkout@v3
       - run: sudo apt-get install -y clang-format-15