Bump atomicfu to v0.18.5

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.jetbrains.kotlinx:atomicfu-gradle-plugin	0.18.4 -> 0.18.5
org.jetbrains.kotlinx:atomicfu	0.18.4 -> 0.18.5

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Release Notes

Kotlin/kotlinx.atomicfu

v0.18.5

Compare Source

• Support JVM IR compiler plugin (#​246).
• Update Kotlin to 1.7.20.
• Added more tests for atomicfu-gradle-plugin (#​255).

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