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](actions/checkout@v2...v4)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/build-docs-dev.yml

@@ -11,7 +11,7 @@ jobs:
     env:
       SPHINX_GITHUB_CHANGELOG_TOKEN: ${{ secrets.GITHUB_TOKEN }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - uses: actions/setup-python@v4
         with:

.github/workflows/build-docs-version.yml

@@ -12,7 +12,7 @@ jobs:
     env:
       SPHINX_GITHUB_CHANGELOG_TOKEN: ${{ secrets.GITHUB_TOKEN }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - uses: actions/setup-python@v4
         with:

.github/workflows/build-publish.yml

@@ -19,7 +19,7 @@ jobs:
   build-wheels:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Python
         uses: actions/setup-python@v4
         with:

.github/workflows/manual-build-docs-version.yml

@@ -21,10 +21,10 @@ jobs:
     env:
       SPHINX_GITHUB_CHANGELOG_TOKEN: ${{ secrets.GITHUB_TOKEN }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         if: inputs.commit == ''
 
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         if: inputs.commit != ''
         with:
           ref: ${{ inputs.commit }}

.github/workflows/pre-commit.yml

@@ -6,7 +6,7 @@ jobs:
   pre-commit:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v2
       - run: pip install pre-commit
       - run: pre-commit --version

.github/workflows/pytest.yml

@@ -8,7 +8,7 @@ jobs:
       matrix:
         python-version: ['3.8', '3.9', '3.10', '3.11', '3.12']
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - run: |
            docker build -f .github/docker/testing.Dockerfile \
              --build-arg PYTHON_VERSION=${{ matrix.python-version }} \
@@ -19,7 +19,7 @@ jobs:
   build-old:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - run: |
           docker build -f .github/docker/testing-old.Dockerfile \
             --build-arg PYTHON_VERSION='3.11' \