Update kotlin monorepo to v2.2.21 (#40)

renovate[bot] · web-flow · commit c932c7835e1b · 2025-10-30T19:51:50.000+01:00
Co-authored-by: renovate[bot] &lt;29139614+renovate[bot]@users.noreply.github.com&gt;
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
@@ -1,5 +1,5 @@
 [versions]
-kotlin = "2.2.0"
+kotlin = "2.2.21"
 kotest = "6.0.0.M4"
 
 [libraries]
