ci: bump actions/checkout from 2.4.0 to 3

Bumps [actions/checkout](https://github.com/actions/checkout) from 2.4.0 to 3.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v2.4.0...v3)

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

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

Author: dependabot[bot]

.github/workflows/build_documentation.yaml

@@ -35,7 +35,7 @@ jobs:
     if: "!contains(github.event.head_commit.message, 'ci skip')"
 
     steps:
-      - uses: actions/checkout@v2.4.0
+      - uses: actions/checkout@v3
 
       - name: Set up Python
         uses: actions/setup-python@v3

.github/workflows/verify_library_structure.yaml

@@ -13,7 +13,7 @@ jobs:
     if: "!contains(github.event.head_commit.message, 'ci skip')"
 
     steps:
-      - uses: actions/checkout@v2.4.0
+      - uses: actions/checkout@v3
 
       - name: Set up Python
         uses: actions/setup-python@v3