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/build.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
 
     - name: Set up JDK 17
       uses: actions/setup-java@v1

.github/workflows/quarkus-snapshot.yaml

@@ -32,12 +32,12 @@ jobs:
           java-version: ${{ env.JAVA_VERSION }}
 
       - name: Checkout repo
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           path: current-repo
 
       - name: Checkout Ecosystem
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           repository: ${{ env.ECOSYSTEM_CI_REPO }}
           path: ecosystem-ci