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/CI.yaml

@@ -25,7 +25,7 @@ jobs:
             matrix:
                 target: [x86_64, x86, aarch64, armv7]
         steps:
-            - uses: actions/checkout@v3
+            - uses: actions/checkout@v4
             - uses: actions/setup-python@v5
               with:
                   python-version: '3.10'
@@ -71,7 +71,7 @@ jobs:
             matrix:
                 target: [x64, x86]
         steps:
-            - uses: actions/checkout@v3
+            - uses: actions/checkout@v4
             - uses: actions/setup-python@v5
               with:
                   python-version: '3.10'
@@ -102,7 +102,7 @@ jobs:
             matrix:
                 target: [x86_64, aarch64]
         steps:
-            - uses: actions/checkout@v3
+            - uses: actions/checkout@v4
             - uses: actions/setup-python@v5
               with:
                   python-version: '3.10'
@@ -129,7 +129,7 @@ jobs:
     sdist:
         runs-on: ubuntu-latest
         steps:
-            - uses: actions/checkout@v3
+            - uses: actions/checkout@v4
             - name: Build sdist
               uses: PyO3/maturin-action@v1
               with: