chore(build): upgrade Gradle to 4.7

build.gradle

@@ -5,9 +5,8 @@ buildscript {
     maven { url "https://plugins.gradle.org/m2/" }
   }
   dependencies {
-    classpath "org.junit.platform:junit-platform-gradle-plugin:$junitVersion"
     classpath "com.netflix.nebula:nebula-kotlin-plugin:$kotlinVersion"
-    classpath "com.netflix.spinnaker.gradle:spinnaker-gradle-project:3.16.0"
+    classpath "com.netflix.spinnaker.gradle:spinnaker-gradle-project:4.0.0"
     classpath "org.jetbrains.dokka:dokka-gradle-plugin:0.9.15"
     classpath "org.jetbrains.kotlin:kotlin-allopen:$kotlinVersion"
   }

gradle/spek.gradle

@@ -14,12 +14,6 @@
  * limitations under the License.
  */
 
-apply plugin: "org.junit.platform.gradle.plugin"
-
-repositories {
-  maven { url "http://dl.bintray.com/jetbrains/spek" }
-}
-
 dependencies {
   // only needed to run tests in IntelliJ
   testCompile "org.junit.platform:junit-platform-runner:$junitVersion"
@@ -28,11 +22,8 @@ dependencies {
   testRuntime "org.jetbrains.spek:spek-junit-platform-engine:$spekVersion"
 }
 
-junitPlatform {
-  platformVersion junitVersion
-  filters {
-    engines {
-      include "spek"
-    }
+test {
+  useJUnitPlatform {
+    includeEngines "spek"
   }
 }

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,5 @@
-#Fri Sep 22 14:39:27 PDT 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.7-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.5.1-bin.zip