Update atomicfu to v0.31.0

Author: renovate[bot]

gradle/libs.versions.toml

@@ -10,7 +10,7 @@ agp = "8.13.2"
 kotlin = "2.3.0"
 publish = "0.35.0"
 api-validator = "0.18.1"
-atomicfu = "0.29.0"
+atomicfu = "0.31.0"
 androidx-activity-compose = "1.12.2"
 androidx-compose-ui-test = "1.10.1"
 kotlinx-serialization-json = "1.9.0"