Update Kotlin and Compose (#177)

* Update Kotlin and Compose

* Update libs.versions.toml

---------

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

gradle/libs.versions.toml

@@ -1,13 +1,13 @@
 [versions]
-kotlin = "1.8.20"
+kotlin = "1.8.21"
 
 [libraries]
 kotlin-gradlePlugin = { module = "org.jetbrains.kotlin:kotlin-gradle-plugin", version.ref = "kotlin" }
 kotlin-test = { module = "org.jetbrains.kotlin:kotlin-test", version.ref = "kotlin" }
 
 kotlinx-coroutines-core = "org.jetbrains.kotlinx:kotlinx-coroutines-core:1.7.1"
 
-compose-compiler = "org.jetbrains.compose.compiler:compiler:1.4.5"
+compose-compiler = "org.jetbrains.compose.compiler:compiler:1.4.7"
 compose-runtime = "org.jetbrains.compose.runtime:runtime:1.4.1"
 
 maven-publish-gradlePlugin = "com.vanniktech:gradle-maven-publish-plugin:0.25.2"