chore(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](https://github.com/actions/checkout/compare/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>

.github/workflows/docker.yml

@@ -28,12 +28,12 @@ jobs:
 
       - name: Get lowercase string for the repository name
         id: lowercase-repo-name
-        uses: ASzc/change-string-case-action@v6
+        uses: ASzc/change-string-case-action@v2
         with:
           string: ${{ github.event.repository.name }}
 
       - name: Checkout base
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
@@ -121,12 +121,12 @@ jobs:
     steps:
       - name: Get lowercase string for the repository name
         id: lowercase-repo-name
-        uses: ASzc/change-string-case-action@v6
+        uses: ASzc/change-string-case-action@v2
         with:
           string: ${{ github.event.repository.name }}
 
       - name: Checkout base
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0