chore(deps): update actions/checkout action to v4

.github/workflows/main.yml

@@ -14,6 +14,6 @@ jobs:
     name: Formatting Check
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: jidicula/[email protected]
         with: { clang-format-version: "15" }