fix(deps): update dependency com.google.code.gson:gson to v2.8.9 [security]

Author: renovate[bot]

pom.xml

@@ -135,7 +135,7 @@
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>
-            <version>2.8.7</version>
+            <version>2.8.9</version>
         </dependency>
         <dependency>
             <groupId>io.github.cdimascio</groupId>