Bump actions/checkout from 2 to 4

Bumps [actions/checkout](https://github.com/actions/checkout) from 2 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v2...v4)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/ci.yml

@@ -9,7 +9,7 @@ jobs:
   clang-format:
     runs-on: ubuntu-22.04
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: clang-format
       run: |
         docker run --rm -v ${PWD}:/src ghcr.io/wiiu-env/clang-format:13.0.0-2 -r ./src
@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-22.04
     needs: clang-format
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: build binary
       run: |
         docker build . -t builder

.github/workflows/pr.yml

@@ -6,7 +6,7 @@ jobs:
   clang-format:
     runs-on: ubuntu-22.04
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: clang-format
       run: |
         docker run --rm -v ${PWD}:/src ghcr.io/wiiu-env/clang-format:13.0.0-2 -r ./src
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-22.04
     needs: clang-format
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: build binary
       run: |
         docker build . -t builder