Bump org.jetbrains.kotlinx:atomicfu from 0.25.0 to 0.26.0

Bumps [org.jetbrains.kotlinx:atomicfu](https://github.com/Kotlin/kotlinx.atomicfu) from 0.25.0 to 0.26.0.
- [Release notes](https://github.com/Kotlin/kotlinx.atomicfu/releases)
- [Changelog](https://github.com/Kotlin/kotlinx-atomicfu/blob/master/CHANGES.md)
- [Commits](Kotlin/kotlinx-atomicfu@0.25.0...0.26.0)

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlinx:atomicfu
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

gradle/libs.versions.toml

@@ -21,7 +21,7 @@ hildan-kotlin-publish-plugin = "1.7.0"
 hildan-github-changelog-plugin = "2.2.0"
 jackson = "2.18.1"
 kotlin = "2.0.21"
-kotlinx-atomicfu = "0.25.0"
+kotlinx-atomicfu = "0.26.0"
 kotlinx-coroutines = "1.9.0"
 kotlinx-io = "0.6.0"
 kotlinx-serialization = "1.7.3"