Bump kotlin.version from 1.9.10 to 1.9.21

Bumps `kotlin.version` from 1.9.10 to 1.9.21.

Updates `org.jetbrains.kotlin:kotlin-bom` from 1.9.10 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@v1.9.10...v1.9.21)

Updates `org.jetbrains.kotlin:kotlin-maven-allopen` from 1.9.10 to 1.9.21

Updates `org.jetbrains.kotlin:kotlin-maven-noarg` from 1.9.10 to 1.9.21

Updates `org.jetbrains.kotlin:kotlin-maven-plugin` from 1.9.10 to 1.9.21

---
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-maven-allopen
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.jetbrains.kotlin:kotlin-maven-noarg
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.jetbrains.kotlin:kotlin-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

pom.xml

@@ -19,7 +19,7 @@
     <version.java>${java.version}</version.java>
     <version.java>${java.version}</version.java>
 
-    <kotlin.version>1.9.10</kotlin.version>
+    <kotlin.version>1.9.21</kotlin.version>
     <kotlin.compiler.jvmTarget>${java.version}</kotlin.compiler.jvmTarget>
     <kotlin.compiler.incremental>true</kotlin.compiler.incremental>
     <kotlin-logging.version>3.0.5</kotlin-logging.version>