Bump org.codehaus.groovy:groovy from 3.0.20 to 3.0.21

Bumps [org.codehaus.groovy:groovy](https://github.com/apache/groovy) from 3.0.20 to 3.0.21.
- [Commits](https://github.com/apache/groovy/commits)

---
updated-dependencies:
- dependency-name: org.codehaus.groovy:groovy
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

gradle/libs.versions.toml

@@ -2,7 +2,7 @@
 detekt = "1.23.5"  # Note: Plugin versions must be updated in the settings.gradle.kts too
 kotlin = "1.9.22"  # Note: Plugin versions must be updated in the settings.gradle.kts too
 
-groovy = "3.0.20"
+groovy = "3.0.21"
 jansi = "2.4.1"
 kord-extensions = "1.8.0-SNAPSHOT"
 kx-ser = "1.6.3"