Update dependency org.jetbrains.kotlinx:kotlinx-collections-immutable to v0.3.8

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.jetbrains.kotlinx:kotlinx-collections-immutable	0.3.7 -> 0.3.8

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Release Notes

Kotlin/kotlinx.collections.immutable (org.jetbrains.kotlinx:kotlinx-collections-immutable)

v0.3.8

What's Changed

• Add extension functions to convert Array to persistent collections #​159
• Don't allocate temporary buffer in SmallPersistentVector.removeAll #​164
• Avoid creating new PersistentList instance when adding empty collection #​176
• Fix memory leak in builders #​193

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