Bump actions/checkout from 4 to 6 (#61)

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/e-cartomobile_ci.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - name: Set up Python 3.9
       id: setup-python

.github/workflows/update_bornes.yml

@@ -23,7 +23,7 @@ jobs:
       - uses: actions/setup-python@v6
         with:
           python-version: ${{ env.PYTHON_VERSION }}
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Install Poetry
         uses: snok/install-poetry@v1
         with:

.github/workflows/update_immatriculations.yml

@@ -23,7 +23,7 @@ jobs:
       - uses: actions/setup-python@v6
         with:
           python-version: ${{ env.PYTHON_VERSION }}
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Install Poetry
         uses: snok/install-poetry@v1
         with: