chore: bump actions/checkout from 2 to 3.1.0

Bumps [actions/checkout](https://github.com/actions/checkout) from 2 to 3.1.0.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v2...v3.1.0)

---
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/build.yml

@@ -5,7 +5,7 @@ jobs:
   psalm:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3.1.0
 
       - name: Psalm
         uses: docker://vimeo/psalm-github-actions
@@ -21,7 +21,7 @@ jobs:
   # codecov:
   #   runs-on: ubuntu-latest
   #   steps:
-  #     - uses: actions/checkout@v2
+  #     - uses: actions/checkout@v3.1.0
   #       with:
   #         fetch-depth: 0
 
@@ -60,7 +60,7 @@ jobs:
             phpunit: 9.5.0
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3.1.0
 
       - name: Cache Composer dependencies
         uses: actions/cache@v2

.github/workflows/release.yml

@@ -11,7 +11,7 @@ jobs:
       uses: actions/[email protected]
 
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3.1.0
 
     - name: Unshallow
       run: git fetch --prune --unshallow