Merge pull request #516 from graphql-java-kickstart/renovate/kotlin.version

Update kotlin.version to v1.5.0

Author: oryan-block

pom.xml

@@ -14,8 +14,8 @@
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <java.version>1.8</java.version>
-        <kotlin.version>1.4.30</kotlin.version>
-        <kotlin-coroutines.version>1.4.3-native-mt</kotlin-coroutines.version>
+        <kotlin.version>1.5.0</kotlin.version>
+        <kotlin-coroutines.version>1.5.0-native-mt</kotlin-coroutines.version>
         <jackson.version>2.12.3</jackson.version>
         <graphql-java.version>16.2</graphql-java.version>