Bump actions/checkout from 4 to 5 in the actions group

Bumps the actions group with 1 update: [actions/checkout](https://github.com/actions/checkout).


Updates `actions/checkout` from 4 to 5
- [Release notes](https://github.com/actions/checkout/releases)
- [Commits](actions/checkout@v4...v5)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: actions
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/ci_publish.yml

@@ -19,7 +19,7 @@ jobs:
     name: Publish HTML
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Setup Python
         uses: actions/setup-python@v5
@@ -45,7 +45,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: publish_html
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Deploy to deployed_notebooks branch
         run: |

.github/workflows/ci_tests_run_notebooks.yml

@@ -43,7 +43,7 @@ jobs:
             os: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332  # v4.1.7
+    - uses: actions/checkout@ff7abcd0c3c05ccf6adc123a8cd1fd4fb30fb493  # v4.1.7
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@82c7e631bb3cdc910f68e0081d67478d79c6982d  #v5.1.0
       with:
@@ -63,7 +63,7 @@ jobs:
     name: Buildhtml testing
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Setup Python
         uses: actions/setup-python@v5