fix(deps): update kotlin monorepo to v2.2.21 (#2115)

This PR contains the following updates:

| Package | Change | Age | Confidence |
|---|---|---|---|
| [org.jetbrains.kotlin:kotlin-serialization](https://kotlinlang.org/)
([source](https://redirect.github.com/JetBrains/kotlin)) | `2.2.20` ->
`2.2.21` |
[![age](https://developer.mend.io/api/mc/badges/age/maven/org.jetbrains.kotlin:kotlin-serialization/2.2.21?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/org.jetbrains.kotlin:kotlin-serialization/2.2.20/2.2.21?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
| [org.jetbrains.kotlin:kotlin-gradle-plugin](https://kotlinlang.org/)
([source](https://redirect.github.com/JetBrains/kotlin)) | `2.2.20` ->
`2.2.21` |
[![age](https://developer.mend.io/api/mc/badges/age/maven/org.jetbrains.kotlin:kotlin-gradle-plugin/2.2.21?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/org.jetbrains.kotlin:kotlin-gradle-plugin/2.2.20/2.2.21?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
| [org.jetbrains.kotlin:kotlin-bom](https://kotlinlang.org/)
([source](https://redirect.github.com/JetBrains/kotlin)) | `2.2.20` ->
`2.2.21` |
[![age](https://developer.mend.io/api/mc/badges/age/maven/org.jetbrains.kotlin:kotlin-bom/2.2.21?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/org.jetbrains.kotlin:kotlin-bom/2.2.20/2.2.21?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
| [org.jetbrains.kotlin.jvm](https://kotlinlang.org/)
([source](https://redirect.github.com/JetBrains/kotlin)) | `2.2.20` ->
`2.2.21` |
[![age](https://developer.mend.io/api/mc/badges/age/maven/org.jetbrains.kotlin.jvm:org.jetbrains.kotlin.jvm.gradle.plugin/2.2.21?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/org.jetbrains.kotlin.jvm:org.jetbrains.kotlin.jvm.gradle.plugin/2.2.20/2.2.21?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

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.github/workflows/test-gradle-project-using-bindings-server/build.gradle.kts

@@ -1,7 +1,7 @@
 import java.net.URI
 
 plugins {
-    kotlin("jvm") version "2.2.20"
+    kotlin("jvm") version "2.2.21"
 }
 
 repositories {

buildSrc/build.gradle.kts

@@ -2,14 +2,14 @@ import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
 plugins {
     `kotlin-dsl`
-    kotlin("jvm") version "2.2.20"
+    kotlin("jvm") version "2.2.21"
 }
 
 dependencies {
-    implementation(platform("org.jetbrains.kotlin:kotlin-bom:2.2.20"))
+    implementation(platform("org.jetbrains.kotlin:kotlin-bom:2.2.21"))
 
-    implementation("org.jetbrains.kotlin:kotlin-gradle-plugin:2.2.20")
-    implementation("org.jetbrains.kotlin:kotlin-serialization:2.2.20")
+    implementation("org.jetbrains.kotlin:kotlin-gradle-plugin:2.2.21")
+    implementation("org.jetbrains.kotlin:kotlin-serialization:2.2.21")
     implementation("io.kotest:kotest-framework-plugin-gradle:6.0.4")
 
     implementation("io.gitlab.arturbosch.detekt:detekt-gradle-plugin:1.23.8")