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] <[email protected]>

Author: dependabot[bot]

.github/workflows/check-cs.yml

@@ -26,7 +26,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v2.4.0
+      uses: actions/checkout@v3
 
     - name: Setup PHP
       uses: shivammathur/setup-php@v2

.github/workflows/promote-tag.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout code
-      uses: actions/checkout@v2.4.0
+      uses: actions/checkout@v3
       with:
         ref: ${{ github.ref }}
     - name: Pick Release Version from git tag

.github/workflows/run-tests.yml

@@ -55,7 +55,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v2.4.0
+      uses: actions/checkout@v3
 
     - name: Setup PHP
       uses: shivammathur/setup-php@v2