Bump org.ajoberstar.grgit:grgit-core from 5.2.2 to 5.3.0 (#835)

Bumps [org.ajoberstar.grgit:grgit-core](https://github.com/ajoberstar/grgit) from 5.2.2 to 5.3.0.
- [Release notes](https://github.com/ajoberstar/grgit/releases)
- [Commits](ajoberstar/grgit@5.2.2...5.3.0)

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

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

Author: dependabot[bot]

build.gradle.kts

@@ -69,7 +69,7 @@ dependencies {
     runtimeOnly("com.kohlschutter.junixsocket:junixsocket-core:2.9.1")
     runtimeOnly("net.java.dev.jna:jna-platform:5.15.0")
 
-    testImplementation("org.ajoberstar.grgit:grgit-core:5.2.2") {
+    testImplementation("org.ajoberstar.grgit:grgit-core:5.3.0") {
         exclude("org.eclipse.jgit", "org.eclipse.jgit.ui")
         exclude("org.eclipse.jgit", "org.eclipse.jgit")
     }