Bump org.jetbrains.kotlin:kotlin-gradle-plugin from 1.8.20 to 2.0.20

Bumps [org.jetbrains.kotlin:kotlin-gradle-plugin](https://github.com/JetBrains/kotlin) from 1.8.20 to 2.0.20.
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/v2.0.20/ChangeLog.md)
- [Commits](JetBrains/kotlin@v1.8.20...v2.0.20)

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlin:kotlin-gradle-plugin
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

build.gradle.kts

@@ -6,7 +6,7 @@ buildscript {
   }
   dependencies {
     classpath("com.android.tools.build:gradle:8.4.1")
-    classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:1.8.20")
+    classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:2.0.20")
     classpath("com.codingfeline.buildkonfig:buildkonfig-gradle-plugin:0.11.0")
 
     classpath("com.google.gms:google-services:4.4.1")