Bump actions/checkout from 3 to 4

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3...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/check.yml

@@ -20,7 +20,7 @@ jobs:
           toolchain: nightly
           components: rustfmt
 
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Cargo fmt
         uses: actions-rs/cargo@v1
@@ -39,7 +39,7 @@ jobs:
           toolchain: stable
           components: clippy
 
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Cargo clippy
         uses: actions-rs/cargo@v1
@@ -65,7 +65,7 @@ jobs:
           git config --global core.autocrlf false
           git config --global core.eol lf
 
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Cargo build
         uses: actions-rs/cargo@v1