Bump the github-actions group with 2 updates

Bumps the github-actions group with 2 updates: [actions/checkout](https://github.com/actions/checkout) and [gradle/gradle-build-action](https://github.com/gradle/gradle-build-action).


Updates `actions/checkout` from 3 to 4
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v3...v4)

Updates `gradle/gradle-build-action` from 2.7.1 to 2.8.0
- [Release notes](https://github.com/gradle/gradle-build-action/releases)
- [Commits](https://github.com/gradle/gradle-build-action/compare/v2.7.1...v2.8.0)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github-actions
- dependency-name: gradle/gradle-build-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: github-actions
...

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

.github/workflows/integ-test-detect-java-toolchains.yml

@@ -26,7 +26,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
     - name: Checkout sources
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: Download distribution if required
       uses: ./.github/actions/download-dist
     - name: Setup Gradle
@@ -53,7 +53,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
     - name: Checkout sources
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: Download distribution if required
       uses: ./.github/actions/download-dist
     - name: Setup Java 20
@@ -89,7 +89,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
     - name: Checkout sources
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: Download distribution if required
       uses: ./.github/actions/download-dist
     - name: Configure java installations env var in Gradle User Home