Update plugin ksp to v2.0.21-1.0.28

gradle/libs.versions.toml

@@ -18,7 +18,7 @@ android-library = { id = "com.android.library", version.ref = "agp" }
 compose = { id = "org.jetbrains.compose", version.ref = "compose" }
 kotlin-android = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }
 kotlin-multiplatform = { id = "org.jetbrains.kotlin.multiplatform", version.ref = "kotlin" }
-ksp = { id = "com.google.devtools.ksp", version = "2.0.0-Beta4-1.0.19" }
+ksp = { id = "com.google.devtools.ksp", version = "2.0.21-1.0.28" }
 paparazzi = { id = "app.cash.paparazzi", version.ref = "paparazzi" }
 sqldelight = { id = "app.cash.sqldelight", version.ref = "sqldelight" }
 spotless = { id = "com.diffplug.spotless", version = "6.25.0" }