chore(pom): update unified-ticketing to 0.2.2

pom.xml

@@ -79,7 +79,7 @@
         <dependency>
             <groupId>de.hftstuttgart</groupId>
             <artifactId>unified-ticketing</artifactId>
-            <version>0.2.0</version>
+            <version>0.2.2</version>
         </dependency>
         <!-- somehow for unified-ticketing maven downloads a 3.x version, even though 4.9.0 is set on unified-ticketing pom -->
         <dependency>