deps: update dependency com.google.code.gson:gson to v2.9.0 (#1850)

Author: renovate-bot

pom.xml

@@ -97,7 +97,7 @@
       <dependency>
         <groupId>com.google.code.gson</groupId>
         <artifactId>gson</artifactId>
-        <version>2.8.9</version>
+        <version>2.9.0</version>
       </dependency>
 
       <!-- Used for Interval and Range types -->