Upgrade to Kotlin 1.5.30

Change-Id: I74545c317093029a2a46707b9024ad3385854ecb
diff --git a/gradle.properties b/gradle.properties
index 731a310..be3d836 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -37,4 +37,8 @@
 android.suppressUnsupportedOptionWarnings=android.suppressUnsupportedOptionWarnings,android.dependencyResolutionAtConfigurationTime.disallow
 
 # Workaround for b/162074215
-android.includeDependencyInfoInApks=false
\ No newline at end of file
+android.includeDependencyInfoInApks=false
+
+# Properties we often want to toggle
+# ksp.version.check=false
+# androidx.compose.multiplatformEnabled=true