Bump actions/checkout from 3 to 4 (#39)

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>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/CI.yml

@@ -12,7 +12,7 @@ jobs:
   linux:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: messense/maturin-action@v1
         with:
           manylinux: auto
@@ -29,7 +29,7 @@ jobs:
   manylinux-aarch64:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: messense/maturin-action@v1
         with:
           target: aarch64-unknown-linux-gnu
@@ -46,7 +46,7 @@ jobs:
   armv7:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: messense/maturin-action@v1
         with:
           target: armv7
@@ -63,7 +63,7 @@ jobs:
   musllinux-x86_64:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: messense/maturin-action@v1
         with:
           target: x86_64
@@ -80,7 +80,7 @@ jobs:
   musllinux-aarch64:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: messense/maturin-action@v1
         with:
           target: aarch64
@@ -97,7 +97,7 @@ jobs:
   windows:
     runs-on: windows-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: messense/maturin-action@v1
         with:
           command: build
@@ -112,7 +112,7 @@ jobs:
   macos:
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: messense/maturin-action@v1
         with:
           command: build

.github/workflows/Test.yml

@@ -19,7 +19,7 @@ jobs:
         python-version: ["3.9", "3.10", "3.11"]
         os: [ubuntu-latest, windows-latest, macos-latest]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - uses: actions-rust-lang/setup-rust-toolchain@v1