Bump actions/checkout from 5 to 6

Bumps [actions/checkout](https://github.com/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
...

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

Author: dependabot[bot]

.github/workflows/convert-examples-to-json.yaml

@@ -24,7 +24,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v5 # checkout repo content
+    - uses: actions/checkout@v6 # checkout repo content
 
     - uses: actions/setup-node@v6 # setup Node.js
       with:

.github/workflows/examples-tests.yaml

@@ -27,7 +27,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v5 # checkout repo content
+      - uses: actions/checkout@v6 # checkout repo content
         with:
           fetch-depth: 0
       - uses: actions/setup-node@v6 # setup Node.js