Bump gradle in /gradle

Bumps gradle in `/gradle` from 9.7.0-jdk21-ubi to 9.7.1-jdk21-ubi.


Updates `gradle` from 9.7.0-jdk21-ubi to 9.7.1-jdk21-ubi

---
updated-dependencies:
- dependency-name: gradle
  dependency-version: 9.7.1-jdk21-ubi
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: per-image/gradle
...

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