Bump retrofitVersion from 2.10.0 to 2.11.0 (#26)

Bumps `retrofitVersion` from 2.10.0 to 2.11.0.

Updates `com.squareup.retrofit2:retrofit` from 2.10.0 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@2.10.0...2.11.0)

Updates `com.squareup.retrofit2:converter-gson` from 2.10.0 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@2.10.0...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-gson
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

build.gradle

@@ -4,7 +4,7 @@ buildscript {
     ext.okhttpVersion = '4.12.0'
     ext.gsonVersion = '2.10.1'
     ext.jjwtVersion = 'd6feebe558'
-    ext.retrofitVersion = '2.10.0'
+    ext.retrofitVersion = '2.11.0'
     ext.coroutineAdapterVersion = '0.9.2'
     ext.coroutinesVersion = '1.8.0'
     ext.bouncycastleVersion = '1.70'