chore(build): update gradle/spinnaker-gradle-plugin versions (spinnaker#444)

Author: cfieber

build.gradle

@@ -38,6 +38,12 @@ allprojects {
     apply plugin: 'spinnaker.project'
   }
 
+  if ([korkVersion].find { it.endsWith("-SNAPSHOT") }) {
+    repositories {
+      mavenLocal()
+    }
+  }
+
   if (name != "fiat-bom") {
     apply plugin: 'java-library'
     apply plugin: 'groovy'

gradle.properties

@@ -1,6 +1,6 @@
 #Tue Jul 16 18:16:17 UTC 2019
 enablePublishing=false
-spinnakerGradleVersion=6.5.0
+spinnakerGradleVersion=7.0.1
 korkVersion=5.8.7
 includeProviders=file,github,google-groups,ldap
 org.gradle.parallel=true

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.4.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.5.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists