chore(deps): Bump actions/checkout in the actions-infrastructure group

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


Updates `actions/checkout` from 5 to 6
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v5...v6)

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

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

Author: dependabot[bot]

.github/workflows/deploy.yml

@@ -16,7 +16,7 @@ jobs:
         runs-on: ubuntu-latest
         steps:
             -   name: Checkout 🛎️
-                uses: actions/checkout@v5
+                uses: actions/checkout@v6
             -   uses: actions/setup-python@v6
                 with:
                     python-version: "3.11"

.github/workflows/validate_datasets.yml

@@ -35,7 +35,7 @@ jobs:
       FORCE_COLOR: 1
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
 
     - name: Set up Node.js
       if: matrix.bids-validator == 'legacy'

.github/workflows/validation.yml

@@ -16,5 +16,5 @@ jobs:
   codespell:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: codespell-project/actions-codespell@master