Bump retrofitVersion from 2.9.0 to 2.11.0

Bumps `retrofitVersion` from 2.9.0 to 2.11.0.

Updates `com.squareup.retrofit2: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)

Updates `com.squareup.retrofit2:converter-jackson` 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)

Updates `com.squareup.retrofit2:converter-scalars` 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:retrofit
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: com.squareup.retrofit2:converter-jackson
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: com.squareup.retrofit2:converter-scalars
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

build.gradle.kts

@@ -71,7 +71,7 @@ dependencies {
 
     implementation("com.fasterxml.jackson.module:jackson-module-kotlin")
 
-    val retrofitVersion = "2.9.0"
+    val retrofitVersion = "2.11.0"
     implementation("com.squareup.retrofit2:retrofit:$retrofitVersion")
     implementation("com.squareup.retrofit2:converter-jackson:$retrofitVersion")
     implementation("com.squareup.retrofit2:converter-scalars:$retrofitVersion")