Update gradle/gradle-build-action action to v2.12.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
gradle/gradle-build-action	action	minor	v2.11.1 -> v2.12.0

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Release Notes

gradle/gradle-build-action (gradle/gradle-build-action)

### [`v2.12.0`](https://togithub.com/gradle/gradle-build-action/compare/v2.11.1...v2.12.0) [Compare Source](https://togithub.com/gradle/gradle-build-action/compare/v2.11.1...v2.12.0)

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Configuration

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🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

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• [ ] If you want to rebase/retry this PR, check this box

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Branch automerge failure

This PR was configured for branch automerge. However, this is not possible, so it has been raised as a PR instead.