Update dependency org.jetbrains.kotlinx:atomicfu-gradle-plugin to v0.26.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.jetbrains.kotlinx:atomicfu-gradle-plugin	0.25.0 -> 0.26.0

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Release Notes

Kotlin/kotlinx.atomicfu (org.jetbrains.kotlinx:atomicfu-gradle-plugin)

v0.26.0

• Updated Kotlin to 2.0.21 (#​479).
• Removed JS Legacy Transformer and disabled transformJs flag by default (#​478).
• Added api kotlinx-atomicfu dependency for JS and WASM targets (#​475).
• Supported deprecated linuxArm32Hfp target (#​455).
• Run Gradle plugin compilation via the fixed Kotlin compiler version (#​472).
• Updated ASM to 9.7 (#​473).
• Completed refactoring the library build scripts (#​421). Kudos to @​dkrasnoff! 🎉
• Added build/configuration caches and scans (#​451).

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[JakeWharton]

Kotlin/kotlinx-atomicfu#482