Build - Bump actions/checkout from 2 to 4 (#2484)

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-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/cd.yml

@@ -25,7 +25,7 @@ jobs:
       REPO_DIST: themes-dist
       REPO_DIST_CDN: themes-cdn
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Extract tag or branch name
         id: ref_name

.github/workflows/ci.yml

@@ -14,7 +14,7 @@ jobs:
       matrix:
         node-version: [20.x]
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
 #      - name: Cache node modules
 #        uses: actions/cache@v2