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](https://github.com/actions/checkout/compare/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/test.yml

@@ -19,7 +19,7 @@ jobs:
     # https://github.community/t/github-actions-does-not-respect-skip-ci/17325/8
     if: "! contains(toJSON(github.event.commits.*.message), '[skip ci]')"
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Python 3.x
       uses: actions/setup-python@v4
       with:
@@ -43,7 +43,7 @@ jobs:
           - platform: windows-latest
             python-version: 3.11
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v4
       with:
@@ -74,7 +74,7 @@ jobs:
     runs-on: ubuntu-latest
     if: "! contains(toJSON(github.event.commits.*.message), '[skip ci]')"
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Python 3.x
       uses: actions/setup-python@v4
       with:
@@ -88,7 +88,7 @@ jobs:
     runs-on: ubuntu-latest
     if: "! contains(toJSON(github.event.commits.*.message), '[skip ci]')"
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Python pypy3
       uses: actions/setup-python@v4
       with:

.github/workflows/wheels.yml

@@ -21,7 +21,7 @@ jobs:
   build_pure:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Python
       uses: actions/setup-python@v4
       with:
@@ -55,7 +55,7 @@ jobs:
           - os: windows-latest
             arch: auto32
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         submodules: recursive
     - name: Set up Python
@@ -83,7 +83,7 @@ jobs:
         python: [38, 39, 310, 311, 312]
         arch: [aarch64]
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         submodules: true
     - uses: docker/setup-qemu-action@v2.2.0