ci: Fix clang-format (#336)

Fix #311

Author: Mizux

.github/workflows/Dockerfile

@@ -3,3 +3,4 @@
 FROM alpine:edge
 # Install system build dependencies
 RUN apk add --no-cache git clang-extra-tools
+RUN git config --global --add safe.directory /repo

.github/workflows/clang_format.yml

@@ -7,7 +7,7 @@ jobs:
   clang-format:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Fetch origin/main
       run: git fetch origin main
     - name: List of changed file(s)