Bump gson from 1.7.1 to 2.8.9 in /modules/binding-websocket

Bumps [gson](https://github.com/google/gson) from 1.7.1 to 2.8.9.
- [Release notes](https://github.com/google/gson/releases)
- [Changelog](https://github.com/google/gson/blob/master/CHANGELOG.md)
- [Commits](https://github.com/google/gson/compare/gson-1.7.1...gson-parent-2.8.9)

---
updated-dependencies:
- dependency-name: com.google.code.gson:gson
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/modules/binding-websocket/pom.xml b/modules/binding-websocket/pom.xml
index c236ee2..f8c8459 100644
--- a/modules/binding-websocket/pom.xml
+++ b/modules/binding-websocket/pom.xml
@@ -57,7 +57,7 @@
 		<dependency>

 			<groupId>com.google.code.gson</groupId>

 			<artifactId>gson</artifactId>

-			<version>1.7.1</version>

+			<version>2.8.9</version>

 			<scope>compile</scope>

 		</dependency>