fix: upgrade com.google.code.gson:gson from 2.8.6 to 2.8.7

Snyk has created this PR to upgrade com.google.code.gson:gson from 2.8.6 to 2.8.7.

See this package in Maven Repository:
https://mvnrepository.com/artifact/com.google.code.gson/gson/

See this project in Snyk:
https://app.snyk.io/org/redislabs/project/79089ca1-db5f-4f26-9f13-6d55a2354fdd?utm_source=github&utm_medium=upgrade-pr

Author: snyk-bot

pom.xml

@@ -46,7 +46,7 @@
         <maven.compiler.target>1.8</maven.compiler.target>
         <maven.test.source>8</maven.test.source>
 	<maven.test.target>8</maven.test.target>
-        <gson.version>2.8.6</gson.version>
+        <gson.version>2.8.7</gson.version>
         <jedis.version>3.6.0</jedis.version>
         <commons.pool2.version>2.9.0</commons.pool2.version>
     </properties>