fix(deps): update kotlin monorepo to v2.3.21

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
org.jetbrains.kotlin.plugin.compose (source)	2.3.20 → 2.3.21
org.jetbrains.kotlin:kotlin-metadata-jvm (source)	2.3.20 → 2.3.21
org.jetbrains.kotlin.android (source)	2.3.20 → 2.3.21

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