Added gradle.properties file to the cache key

[hurricup]

Part of project configuration may be in the gradle.properties file and changing it should invalidate cache

See: https://docs.gradle.org/current/userguide/build_environment.html#sec:gradle_configuration_properties

Check list:

• [x] Mark if documentation changes are required.
• [x] Mark if tests were added or updated to cover the changes.

[dmitry-shibanov]

Hello @hurricup. Thank you for your pull request. We'll take a look on it. Could you please attach an issue if it exists? Besides, could you please regenerate dist with npm run build command.

[hurricup]

There is no issue, just stumbled on it while migrating to re-usable workflows.