Bump kotlin from 2.3.20 to 2.3.21 (#113)

dependabot[bot] · web-flow · commit 74117a55b77a · 2026-05-04T16:45:19.000+03:00
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
@@ -1,5 +1,5 @@
 [versions]
-kotlin = "2.3.20"
+kotlin = "2.3.21"
 junit = "6.0.3"
 dokka = "2.2.0"
 nexus = "2.0.0"
