Bump actions/checkout from 2 to 4 (#455)

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>

.github/workflows/build.yml

@@ -18,7 +18,7 @@ jobs:
     name: build
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         name: checkout
         with:
           path: smallrye-parent
@@ -37,7 +37,7 @@ jobs:
           cd smallrye-parent
           mvn -B -ntp formatter:validate install
 
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         name: checkout smallrye-config
         with:
           repository: smallrye/smallrye-config
@@ -50,7 +50,7 @@ jobs:
           git diff pom.xml
           mvn -B -ntp install -Djava11.home=${{env.JAVA_HOME_11_X64}}
 
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         name: checkout smallrye-common
         with:
           repository: smallrye/smallrye-common

.github/workflows/release.yml

@@ -22,7 +22,7 @@ jobs:
           github-token: ${{secrets.GITHUB_TOKEN}}
           metadata-file-path: '.github/project.yml'
 
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           token: ${{secrets.RELEASE_TOKEN}}