Bump kotlin.version from 1.5.21 to 1.5.30

Bumps `kotlin.version` from 1.5.21 to 1.5.30.

Updates `kotlin-maven-plugin` from 1.5.21 to 1.5.30

Updates `kotlin-stdlib` from 1.5.21 to 1.5.30
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/v1.5.30/ChangeLog.md)
- [Commits](JetBrains/kotlin@v1.5.21...v1.5.30)

Updates `kotlin-stdlib-common` from 1.5.21 to 1.5.30
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/v1.5.30/ChangeLog.md)
- [Commits](JetBrains/kotlin@v1.5.21...v1.5.30)

Updates `kotlin-test-junit` from 1.5.21 to 1.5.30
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/v1.5.30/ChangeLog.md)
- [Commits](JetBrains/kotlin@v1.5.21...v1.5.30)

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlin:kotlin-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.jetbrains.kotlin:kotlin-stdlib
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.jetbrains.kotlin:kotlin-stdlib-common
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.jetbrains.kotlin:kotlin-test-junit
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

pom.xml

@@ -101,7 +101,7 @@
  <maven.compiler.target>1.8</maven.compiler.target>
 
  <!-- Configuration of mutiny-kotlin module -->
- <kotlin.version>1.5.21</kotlin.version>
+ <kotlin.version>1.5.30</kotlin.version>
  <kotlin.compiler.apiVersion>1.3</kotlin.compiler.apiVersion>
  <kotlin.compiler.languageVersion>1.3</kotlin.compiler.languageVersion>
  <coroutines.version>1.5.1</coroutines.version>