Update actions/checkout action to v4

.github/workflows/ci.yml

@@ -15,7 +15,7 @@ jobs:
           - '3.10'
           - '3.11'
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4
         with:
@@ -40,7 +40,7 @@ jobs:
     if: ${{ github.ref == 'refs/heads/master' }}
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Python
         uses: actions/setup-python@v4
       - name: Build packages
@@ -62,7 +62,7 @@ jobs:
     if: ${{ startsWith(github.ref, 'refs/tags') }}
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Python
         uses: actions/setup-python@v4
       - name: Build packages
@@ -78,7 +78,7 @@ jobs:
     name: Build docs for each version
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
@@ -103,7 +103,7 @@ jobs:
     if: ${{ startsWith(github.ref, 'refs/tags') }}
     runs-on: ubuntu-20.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Download artifacts
         uses: actions/download-artifact@v3
         with:

.github/workflows/codacy-analysis.yml

@@ -21,7 +21,7 @@ jobs:
     steps:
       # Checkout the repository to the GitHub Actions runner
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       # Execute Codacy Analysis CLI and generate a SARIF output with the security issues identified during the analysis
       - name: Run Codacy Analysis CLI