build(deps): bump actions/checkout from 3 to 6

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/ci_check_license_headers.yaml

@@ -29,7 +29,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v6
 
       - name: Download Apache RAT
         run: |

.github/workflows/quarkus-snapshot.yml

@@ -55,13 +55,13 @@ jobs:
           cache-key-prefix: ${{ runner.os }}-${{ matrix.java-version }}-maven${{ matrix.maven-version }}
 
       - name: Checkout repo
-        uses: actions/checkout@v3
+        uses: actions/checkout@v6
         with:
           path: current-repo
           ref: main
 
       - name: Checkout Ecosystem
-        uses: actions/checkout@v3
+        uses: actions/checkout@v6
         with:
           repository: ${{ env.ECOSYSTEM_CI_REPO }}
           ref: main

.github/workflows/sonarcloud.yml

@@ -45,7 +45,7 @@ jobs:
 
     steps:
       - name: Check out repository code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0