chore(dependency): upgrade kotlin to 1.6.21 in gate along with kork

Author: j-sandy

gradle.properties

@@ -2,11 +2,10 @@ enablePublishing=false
 fiatVersion=1.44.0
 includeProviders=basic,iap,ldap,oauth2,saml,x509
 korkVersion=7.221.0
-kotlinVersion=1.5.32
+kotlinVersion=1.6.21
 org.gradle.parallel=true
 spinnakerGradleVersion=8.32.1
 targetJava11=true
-
 # To enable a composite reference to a project, set the
 #  project property `'<projectName>Composite=true'`.
 #

gradle/kotlin-test.gradle

@@ -32,7 +32,7 @@ dependencies {
 
 compileTestKotlin {
   kotlinOptions {
-    languageVersion = "1.5"
+    languageVersion = "1.6"
     jvmTarget = "11"
   }
 }

gradle/kotlin.gradle

@@ -19,14 +19,14 @@ apply plugin: "kotlin-spring"
 
 compileKotlin {
   kotlinOptions {
-    languageVersion = "1.5"
+    languageVersion = "1.6"
     jvmTarget = "11"
   }
 }
 
 compileTestKotlin {
   kotlinOptions {
-    languageVersion = "1.5"
+    languageVersion = "1.6"
     jvmTarget = "11"
   }
 }