chore(deps): update kotest.version to v6

Author: renovate[bot]

pom.xml

@@ -34,7 +34,7 @@
         <!-- third-party deps -->
         <swagger-core.version>2.2.45</swagger-core.version>
         <swagger-parser-v3.version>2.1.39</swagger-parser-v3.version>
-        <kotest.version>5.9.1</kotest.version>
+        <kotest.version>6.1.7</kotest.version>
     </properties>
 
     <dependencies>