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](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] <[email protected]>

.github/workflows/ci.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Set up Python
       uses: actions/setup-python@v1
       with:
@@ -25,7 +25,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     - name: Set up Python
       uses: actions/setup-python@v2
@@ -58,7 +58,7 @@ jobs:
 
     steps:
 
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
       with:
         path: ${{ env.galaxy-name }}
 
@@ -101,7 +101,7 @@ jobs:
     needs: [pre-commit, molecule]
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - uses: robertdebock/[email protected]
       with:
         galaxy_api_key: ${{ secrets.GALAXY_API_KEY }}