Bump org.ajoberstar.grgit from 5.2.0 to 5.2.1 (#5)

Bumps [org.ajoberstar.grgit](https://github.com/ajoberstar/grgit) from 5.2.0 to 5.2.1.
- [Release notes](https://github.com/ajoberstar/grgit/releases)
- [Commits](https://github.com/ajoberstar/grgit/compare/5.2.0...5.2.1)

---
updated-dependencies:
- dependency-name: org.ajoberstar.grgit
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

build.gradle

@@ -1,6 +1,6 @@
 plugins {
     id 'org.cadixdev.licenser' version '0.6.1'
-    id 'org.ajoberstar.grgit' version '5.2.0'
+    id 'org.ajoberstar.grgit' version '5.2.1'
     id 'maven-publish'
     id 'java'
 }