build(deps): 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] <[email protected]>

.github/workflows/deploy_docs.yaml

@@ -10,7 +10,7 @@ jobs:
     name: Deploy docs
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Install python 3.9
         uses: actions/setup-python@v4

.github/workflows/release_pypi.yaml

@@ -16,7 +16,7 @@ jobs:
       id-token: write
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Python
         uses: actions/setup-python@v4
         with:

.github/workflows/test.yaml

@@ -22,7 +22,7 @@ jobs:
           - '3.10'
           - '3.11'
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Install python ${{ matrix.python-version }}
         uses: actions/setup-python@v4
@@ -58,7 +58,7 @@ jobs:
     name: Formatting check
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           # Full git history is needed to get a proper list of changed test_files within `super-linter`
           fetch-depth: 0
@@ -89,7 +89,7 @@ jobs:
     name: Test docs
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Install python 3.9
         uses: actions/setup-python@v4