Bump kotlin.version from 2.1.10 to 2.1.20

Bumps `kotlin.version` from 2.1.10 to 2.1.20.

Updates `org.jetbrains.kotlin:kotlin-stdlib-jdk8` from 2.1.10 to 2.1.20
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.1.10...v2.1.20)

Updates `org.jetbrains.kotlin:kotlin-test` from 2.1.10 to 2.1.20
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.1.10...v2.1.20)

Updates `org.jetbrains.kotlin:kotlin-test-junit` from 2.1.10 to 2.1.20
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.1.10...v2.1.20)

Updates `org.jetbrains.kotlin:kotlin-maven-plugin` from 2.1.10 to 2.1.20

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlin:kotlin-stdlib-jdk8
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.jetbrains.kotlin:kotlin-test
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.jetbrains.kotlin:kotlin-test-junit
  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] <support@github.com>

Author: dependabot[bot]

pom.xml

@@ -105,7 +105,7 @@
     <java.version>17</java.version>
     <junit-jupiter.version>5.7.2</junit-jupiter.version>
     <junit.version>4.13.2</junit.version>
-    <kotlin.version>2.1.10</kotlin.version>
+    <kotlin.version>2.1.20</kotlin.version>
     <kotlin.compiler.jvmTarget>${java.version}</kotlin.compiler.jvmTarget>
     <kotlin.compiler.apiVersion>2.1</kotlin.compiler.apiVersion>
     <kotlin.compiler.languageVersion>2.1</kotlin.compiler.languageVersion>