compatibility issue with Gradle 7.x

[DmitryevichD]

After update gradle to 7.x current plugin is broken.

When I try to execute updateVersion task I catch next problem:

* What went wrong:
A problem was found with the configuration of task ':updateVersion' (type 'UpdateVersionTask').
  - In plugin 'com.chattylabs.versioning' type 'com.chattylabs.plugin.UpdateVersionTask' property 'group' is missing an input or output annotation.
    
    Reason: A property without annotation isn't considered during up-to-date checking.
    
    Possible solutions:
      1. Add an input or output annotation.
      2. Mark it as @Internal.