Bump actions/checkout from 4 to 6 in the all-actions group

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


Updates `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
  dependency-group: all-actions
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/render-specs.yml

@@ -13,7 +13,7 @@ jobs:
       contents: write
     steps:
       - name: Checkout 🛎️
-        uses: actions/checkout@v4 # If you're using actions/checkout@v4 you must set persist-credentials to false in most cases for the deployment to work correctly.
+        uses: actions/checkout@v6 # If you're using actions/checkout@v6 you must set persist-credentials to false in most cases for the deployment to work correctly.
         with:
           persist-credentials: false