Advance bootstrap to 1.3.70-dev-1806

Due to updated K/JS klib ABI

Add dependency of KotlinCoverageExtension to idea test classpath because of a new check introduced in 1806.

(cherry picked from commit bffbe89f53)

idea/build.gradle.kts

@@ -125,6 +125,7 @@ dependencies {
     testCompile(project(":idea:idea-native")) { isTransitive = false }
     testCompile(project(":idea:idea-gradle-native")) { isTransitive = false }
     testCompile(commonDep("junit:junit"))
+    testCompileOnly(intellijPluginDep("coverage"))
 
     testRuntime(project(":kotlin-native:kotlin-native-library-reader")) { isTransitive = false }
     testRuntime(project(":kotlin-native:kotlin-native-utils")) { isTransitive = false }