build(deps): bump org.ajoberstar.grgit from 4.1.1 to 5.0.0

Bumps [org.ajoberstar.grgit](https://github.com/ajoberstar/grgit) from 4.1.1 to 5.0.0.
- [Release notes](https://github.com/ajoberstar/grgit/releases)
- [Commits](ajoberstar/grgit@4.1.1...5.0.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

eclipsePlugin/build.gradle

@@ -3,7 +3,7 @@ import static groovy.io.FileType.FILES
 // TODO: deploy not only jar but also sources and javadoc, to pass validation by Sonatype nexus
 // apply from: "$rootDir/gradle/maven.gradle"
 plugins {
-  id 'org.ajoberstar.grgit' version '4.1.1'
+  id 'org.ajoberstar.grgit' version '5.0.0'
   id "eclipse-convention"
 }