fix: samples/server/petstore/kotlin/vertx/pom.xml to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JAVA-ORGAPACHECOMMONS-10734078

Author: snyk-bot

samples/server/petstore/kotlin/vertx/pom.xml

@@ -92,7 +92,7 @@
         <dependency>
             <groupId>io.swagger.parser.v3</groupId>
             <artifactId>swagger-parser</artifactId>
-            <version>2.0.5</version>
+            <version>2.1.22</version>
         </dependency>
 
         <dependency>
@@ -172,14 +172,13 @@
                         </goals>
                         <configuration>
                             <transformers>
-                                <transformer
-                                    implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
+                                <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                                     <manifestEntries>
                                         <Main-Class>org.openapitools.server.api.verticle.DefaultApiVerticleKt</Main-Class>
                                     </manifestEntries>
                                 </transformer>
                             </transformers>
-                            <artifactSet />
+                            <artifactSet/>
                             <outputFile>${project.build.directory}/${project.artifactId}-${project.version}-fat.jar</outputFile>
                         </configuration>
                     </execution>