Update Kotlin

Author: jan-tennert

README.md

@@ -10,7 +10,7 @@ For information about supported Kotlin targets, see the corresponding module REA
 
 [![](https://img.shields.io/github/release/supabase-community/supabase-kt?label=stable)](https://github.com/supabase-community/supabase-kt/releases) 
 [![](https://badgen.net/github/release/supabase-community/supabase-kt?label=prerelease)](https://central.sonatype.com/search?q=io.github.jan.supabase&smo=true) 
-[![Kotlin](https://img.shields.io/badge/kotlin-2.0.21--RC--blue.svg?logo=kotlin)](http://kotlinlang.org) 
+[![Kotlin](https://img.shields.io/badge/kotlin-2.0.21-blue.svg?logo=kotlin)](http://kotlinlang.org) 
 [![Ktor](https://img.shields.io/badge/ktor-3.0.0-blue)](https://ktor.io/)
 [![slack](https://img.shields.io/badge/slack-%23supabase--kt-purple.svg?logo=slack)](https://kotlinlang.slack.com/archives/C06QXPC7064)
 

gradle/libs.versions.toml

@@ -1,5 +1,5 @@
 [versions]
-kotlin = "2.0.21-RC"
+kotlin = "2.0.21"
 accompanist-permissions = "0.36.0"
 ktor = "3.0.0"
 dokka = "1.9.20"