chore(deps): update plugin org.ajoberstar.grgit to v5.3.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change	OpenSSF
org.ajoberstar.grgit	plugin	minor	5.2.2 -> 5.3.0

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Release Notes

ajoberstar/grgit (org.ajoberstar.grgit)

### [`v5.3.0`](https://redirect.github.com/ajoberstar/grgit/releases/tag/5.3.0) [Compare Source](https://redirect.github.com/ajoberstar/grgit/compare/5.2.2...5.3.0) Small release to resolve outstanding issues that I still felt were in scope (given feature freeze, see README for more background). #### Breaking Changes *None* #### Enhancements - [#​362](https://redirect.github.com/ajoberstar/grgit/issues/362) Add `GrgitService#findGrgit()` which returns an `Optional` allowing accessing whether a repo is present or not, rather than throwing like `getGrgit()` does. #### Fixes - [#​391](https://redirect.github.com/ajoberstar/grgit/issues/391) `initIfNoTExists` on `GrgitService` works now - Update dependencies #### Deprecations *None* #### Compatibility Tested on the following version: | Java Version | Gradle Versions | |---------------|-------------------| | 11 | 7.0.2, 7.6.4, 8.0.2, 8.10.2 | | 17 | 7.3.3, 7.6.4, 8.0.2, 8.10.2 | | 21 | 8.4, 8.10.2 |

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[we-release[bot]]

:tada: This PR is included in version 6.0.1 :tada:

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