Bump com.squareup.retrofit2:converter-gson from 2.9.0 to 2.11.0

Bumps [com.squareup.retrofit2:converter-gson](https://github.com/square/retrofit) from 2.9.0 to 2.11.0.
- [Release notes](https://github.com/square/retrofit/releases)
- [Changelog](https://github.com/square/retrofit/blob/trunk/CHANGELOG.md)
- [Commits](square/retrofit@2.9.0...2.11.0)

---
updated-dependencies:
- dependency-name: com.squareup.retrofit2:converter-gson
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

exec/pom.xml

@@ -114,7 +114,7 @@
     <dependency>
       <groupId>com.squareup.retrofit2</groupId>
       <artifactId>converter-gson</artifactId>
-      <version>2.9.0</version>
+      <version>2.11.0</version>
     </dependency>
 
     <!-- Optional: Logging Interceptor for Retrofit -->