Replace gradle/gradle-build-action by gradle/actions/setup-gradle

[bmarty]

See more details here: https://github.com/gradle/actions/blob/main/docs/deprecation-upgrade-guide.md#the-action-gradlegradle-build-action-has-been-replaced-by-gradleactionssetup-gradle

2 occurrences to replace in this project.