Target Android API 24

gradle.properties

@@ -20,4 +20,5 @@ kotlin.native.enableDependencyPropagation=false
 #kotlin.mpp.enableGranularSourceSetsMetadata=true
 systemProp.org.gradle.internal.publish.checksums.insecure=true
 gnsp.disableApplyOnlyOnRootProjectEnforcement=true
-mirai.android.target.api.level=15
+# We may target 15 with Kotlin 1.5 IR
+mirai.android.target.api.level=24