chore(deps): update dependency com.google.code.gson:gson to v2.8.6 (#49)

Author: renovate-bot

pom.xml

@@ -172,7 +172,7 @@
     <objenesis.version>2.6</objenesis.version>
     <errorprone.version>2.3.3</errorprone.version>
     <autovalue.version>1.6.6</autovalue.version>
-    <gson.version>2.8.5</gson.version>
+    <gson.version>2.8.6</gson.version>
   </properties>
 
   <dependencyManagement>