deps: bump org.jetbrains.kotlin:kotlin-gradle-plugin from 2.0.0 to 2.1.21#4

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dependabot/gradle/org.jetbrains.kotlin-kotlin-gradle-plugin-2.1.21WiIIiam278/PreProcessor:dependabot/gradle/org.jetbrains.kotlin-kotlin-gradle-plugin-2.1.21Copy head branch name to clipboard