Update Jersey version in sample

Author: deki

samples/jersey/pet-store/pom.xml

@@ -26,7 +26,7 @@
     <properties>
         <maven.compiler.source>1.8</maven.compiler.source>
         <maven.compiler.target>1.8</maven.compiler.target>
-        <jersey.version>2.30.1</jersey.version>
+        <jersey.version>2.34</jersey.version>
         <jackson.version>2.12.0</jackson.version>
     </properties>