build: update kotlin {2.0.21 => 2.1.0}

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.jetbrains.kotlin.plugin.serialization	2.0.21 -> 2.1.0
org.jetbrains.kotlin.jvm	2.0.21 -> 2.1.0

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