Update plugin org.ajoberstar.grgit to v5.2.1

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.ajoberstar.grgit	5.2.0 -> 5.2.1

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Release Notes

ajoberstar/grgit (org.ajoberstar.grgit)

### [`v5.2.1`](https://togithub.com/ajoberstar/grgit/releases/tag/5.2.1) [Compare Source](https://togithub.com/ajoberstar/grgit/compare/5.2.0...5.2.1) Small patch to pick up new dependencies. #### Breaking Changes *None* #### Enhancements *None* #### Fixes - [#​394](https://togithub.com/ajoberstar/grgit/issues/394) Update dependencies to resolve JGit vulnerability #### Deprecations *None* #### Compatibility Tested on the following version: | Java Version | Gradle Versions | |---------------|-------------------| | 11 | 7.0.2, 7.6.1, 8.0.2, 8.4 | | 17 | 7.3.3, 7.6.1, 8.0.2, 8.4 | | 21 | 8.4 |

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Configuration

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