Bump org.ajoberstar.grgit:grgit-core from 5.2.0 to 5.2.1 in /buildSrc

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

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

Signed-off-by: dependabot[bot] <[email protected]>

buildSrc/build.gradle

@@ -122,7 +122,7 @@ dependencies {
   api 'org.jruby.jcodings:jcodings:1.0.58'
   api 'org.jruby.joni:joni:2.2.1'
   api "com.fasterxml.jackson.core:jackson-databind:${props.getProperty('jackson_databind')}"
-  api "org.ajoberstar.grgit:grgit-core:5.2.0"
+  api "org.ajoberstar.grgit:grgit-core:5.2.1"
 
   testFixturesApi "junit:junit:${props.getProperty('junit')}"
   testFixturesApi "com.carrotsearch.randomizedtesting:randomizedtesting-runner:${props.getProperty('randomizedrunner')}"
@@ -133,7 +133,7 @@ dependencies {
   integTestImplementation('org.spockframework:spock-core:2.3-groovy-3.0') {
     exclude module: "groovy"
   }
-  implementation('org.ajoberstar.grgit:grgit-core:5.2.0') {
+  implementation('org.ajoberstar.grgit:grgit-core:5.2.1') {
     exclude group: 'org.eclipse.jgit', module: 'org.eclipse.jgit'
   }
   implementation 'org.eclipse.jgit:org.eclipse.jgit:6.7.0.202309050840-r'