Bump multiplatform from 1.8.10 to 1.8.20 (#272)

* Bump multiplatform from 1.8.10 to 1.8.20

Bumps [multiplatform](https://github.com/JetBrains/kotlin) from 1.8.10 to 1.8.20.
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/master/ChangeLog.md)
- [Commits](https://github.com/JetBrains/kotlin/commits)

---
updated-dependencies:
- dependency-name: multiplatform
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

* Update build.gradle.kts

---------

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Philip Wedemann <[email protected]>

Author: dependabot[bot]

build.gradle.kts

@@ -3,8 +3,8 @@ import java.util.*
 import io.gitlab.arturbosch.detekt.*
 
 plugins {
-    kotlin("multiplatform") version "1.8.10"
-    id("org.jetbrains.compose") version "1.3.1"
+    kotlin("multiplatform") version "1.8.20"
+    id("org.jetbrains.compose") version "1.4.0-rc03"
     `maven-publish`
     signing
     id("io.github.gradle-nexus.publish-plugin") version "1.3.0"