build(deps): bump actions/checkout from 2 to 4

Bumps [actions/checkout](https://github.com/actions/checkout) from 2 to 4. - [Release notes](https://github.com/actions/checkout/releases) - [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md) - [Commits](actions/checkout@v2...v4) --- updated-dependencies: - dependency-name: actions/checkout dependency-version: '4' dependency-type: direct:production update-type: version-update:semver-major ... Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/docs.yml

@@ -15,7 +15,7 @@ jobs:
  id-token: write
  steps:
  - name: Checkout repository
- uses: actions/checkout@v2
+ uses: actions/checkout@v4
 
  - name: Set up Python
  uses: actions/setup-python@v2