fix: upgrade com.google.code.gson:gson from 2.8.9 to 2.9.0 (#8354)

Snyk has created this PR to upgrade com.google.code.gson:gson from 2.8.9 to 2.9.0.

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/argoproj/project/b741edcd-8851-4a87-a531-deb09ce34ee1?utm_source=github&utm_medium=referral&page=upgrade-pr

sdks/java/pom.xml

@@ -115,7 +115,7 @@
  <maven.compiler.target>${java.version}</maven.compiler.target>
  <swagger-core-version>1.6.5</swagger-core-version>
  <okhttp-version>4.9.3</okhttp-version>
- <gson-version>2.8.9</gson-version>
+ <gson-version>2.9.0</gson-version>
  <javax-annotation-version>1.3.2</javax-annotation-version>
  <junit-version>4.13.1</junit-version>
  <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>