chore: bump app version to v1.2.0

Author: alvyynm

pom.xml

@@ -10,7 +10,7 @@
 	</parent>
 	<groupId>com.shrtly</groupId>
 	<artifactId>url-shortener</artifactId>
-	<version>1.1.0</version>
+	<version>1.2.0</version>
 	<name>url-shortener</name>
 	<description>URL Shortener Spring Boot Backend</description>
 	<url/>