Update kotlin

Author: renovate[bot]

pom.xml

@@ -14,8 +14,8 @@
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <java.version>11</java.version>
-        <kotlin.version>1.8.21</kotlin.version>
-        <kotlin-coroutines.version>1.6.4</kotlin-coroutines.version>
+        <kotlin.version>1.9.0</kotlin.version>
+        <kotlin-coroutines.version>1.7.3</kotlin-coroutines.version>
         <jackson.version>2.14.2</jackson.version>
         <graphql-java.version>21.0</graphql-java.version>
         <reactive-streams.version>1.0.4</reactive-streams.version>