update checkout jobs to 4

.github/actions/python-cache-requirements/action.yml

@@ -9,7 +9,7 @@ inputs:
 runs:
   using: "composite"
   steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: actions/setup-python@v5
       with:
         cache: 'pip'

.github/workflows/dependencies.yml

@@ -22,7 +22,7 @@ jobs:
         python-version: ['3.8']
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set up Python
         uses: ./.github/actions/python-cache-requirements

.github/workflows/doc.yml

@@ -21,7 +21,7 @@ jobs:
     name: Documentation
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: ./.github/actions/python-cache-requirements
         with:
           requirements: docs/requirements.txt

.github/workflows/lint.yml

@@ -16,15 +16,15 @@ jobs:
     name: Checking SRID in migrations files
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - run: |
           test $(ls geotrek/*/migrations/*.py | xargs grep -l srid | xargs grep -L SRID | wc -l) -eq 0
 
   flake8:
     name: Checking Flake8 rules
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: ./.github/actions/python-cache-requirements
         with:
           requirements: dev-requirements.txt