bump: Gradle version to the latest

[coolgang123]

trafficstars

• As part of monthly dependency bump tasks.
• Files have been auto-generated by ./gradlew wrapper --gradle-version=8.8.

[cf-gitbot]

We have created an issue in Pivotal Tracker to manage this. Unfortunately, the Pivotal Tracker project is private so you may be unable to view the contents of the story.

The labels on this github issue will be updated when the story is started.