chore(deps): update gradle/actions action to v4

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
gradle/actions	action	major	v3 -> v4

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Release Notes

gradle/actions (gradle/actions)

### [`v4`](https://togithub.com/gradle/actions/compare/v3...v4) [Compare Source](https://togithub.com/gradle/actions/compare/v3...v4)

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Configuration

📅 Schedule: Branch creation - "before 9am on Monday every 1 month" in timezone Europe/Berlin, Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR is behind base branch, 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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[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 94.33%. Comparing base (712abeb) to head (2018153).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #57 +/- ## ======================================= Coverage 94.33% 94.33% ======================================= Files 10 10 Lines 106 106 Branches 15 15 ======================================= Hits 100 100 Misses 1 1 Partials 5 5 ```

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