Update Kotlin 2.1.21

Pluu · Pluu · commit cc2cb2e8d13c · 2025-05-14T23:57:49.000+09:00
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
@@ -1,7 +1,7 @@
 [versions]
 agp = "8.10.0"
 lint = "31.10.0"
-kotlin = "2.1.20"
+kotlin = "2.1.21"
 compose-bom = "2025.05.00"
 
 [libraries]
