chore(deps): bump version.kotlin from 1.9.20 to 1.9.21 (#366)

Bumps `version.kotlin` from 1.9.20 to 1.9.21.

Updates `org.jetbrains.kotlin:kotlin-bom` from 1.9.20 to 1.9.21
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v1.9.20...v1.9.21)

Updates `org.jetbrains.kotlin:kotlin-scripting-jsr223` from 1.9.20 to 1.9.21
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v1.9.20...v1.9.21)

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlin:kotlin-bom
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.jetbrains.kotlin:kotlin-scripting-jsr223
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

pom.xml

@@ -36,7 +36,7 @@
     <version.camunda-connectors>8.3.0</version.camunda-connectors>
 
     <version.groovy>2.4.21</version.groovy>
-    <version.kotlin>1.9.20</version.kotlin>
+    <version.kotlin>1.9.21</version.kotlin>
     <version.graalvm>23.0.2</version.graalvm>
 
     <plugin.version.function-maven-plugin>0.11.0</plugin.version.function-maven-plugin>