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/api-and-integration-tests.yml

@@ -18,7 +18,7 @@ jobs:
        }}
     steps:
 
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     - name: Set up Python
       uses: actions/setup-python@v5

.github/workflows/api-documentation.yml

@@ -21,7 +21,7 @@ jobs:
         os: [ubuntu-latest]
         python-version: [2.7]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set up Python
         # setup-python stopped supporting Python 2.7, use https://github.com/MatteoH2O1999/setup-python

.github/workflows/build-push-image.yml

@@ -21,7 +21,7 @@ jobs:
       id: extract_branch
 
     - name: Check out Yoda repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         path: yoda
         repository: UtrechtUniversity/yoda

.github/workflows/codeql-analysis.yml

@@ -18,7 +18,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL

.github/workflows/python.yml

@@ -9,7 +9,7 @@ jobs:
       matrix:
         python-version: ['3.8', '3.9', '3.10', '3.11']
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Python
         uses: actions/setup-python@v5
         with:

.github/workflows/python2.yml

@@ -15,7 +15,7 @@ jobs:
       matrix:
         python-version: [2.7]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set up Python
         # setup-python stopped supporting Python 2.7, use https://github.com/MatteoH2O1999/setup-python

.github/workflows/schemas.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set up Node.js
         uses: actions/setup-node@v4

.github/workflows/unit-tests.yml

@@ -15,7 +15,7 @@ jobs:
       matrix:
         python-version: [2.7]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set up Python
         # setup-python stopped supporting Python 2.7, use https://github.com/MatteoH2O1999/setup-python