Plugin is incompatible with gradle configuration cache

[abendt]

The plugin cannot be used in a project that also uses the new configuration cache (https://docs.gradle.org/7.2/userguide/configuration_cache.html)

When trying to enable the config cache there is a build failure and this message:

FAILURE: Build failed with an exception.

• What went wrong:
  Configuration cache problems found in this build.

- Task `:app:validateYaml` of type `at.zierler.gradle.YamlValidatorTask`: invocation of 'Task.project' at execution time is unsupported.
  See https://docs.gradle.org/7.2/userguide/configuration_cache.html#config_cache:requirements:use_project_during_execution