fix(deps): update kotlin monorepo to v1.8.21 (#969)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

build.gradle.kts

@@ -40,7 +40,7 @@ plugins {
 buildscript {
   dependencies {
     classpath("com.google.android.gms:oss-licenses-plugin:0.10.6")
-    classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:1.8.20")
+    classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:1.8.21")
   }
 }
 

gradle/libs.versions.toml

@@ -2,7 +2,7 @@
 agp = "8.0.0"
 agp-tooling = "7.4.2"
 gradle-tooling = "8.0.2"
-kotlin = "1.8.20"
+kotlin = "1.8.21"
 tree-sitter = "2.0.0"
 editor = "0.21.1-a2326b4-SNAPSHOT"
 glide = "4.15.1"