How to update the Gradle version

To update the Gradle version of each Gradle wrapper in this repository, start by updating the Gradle wrapper in the exercises directory:

./gradlew wrapper --gradle-version=X.Y

Then, update the Gradle wrappers for each exercise to match the root version:

./gradlew allWrappers

Copy the updated Gradle resources to the exercise template directory.

Finally, commit and push your changes.