Try to migrate to `google-http-client-apache:2.0.0`

[armiol]

A Google HTTP Client dependency has spawned a separate artifact for Apache HTTP transport.

Currently we are using the same "legacy" Apache HTTP transport as previously (google-http-client-apache:1.28.0).

This task is to migrate to google-http-client-apache:2.0.0 and test the migrated codebase. As claimed by Google, a new Apache HTTP transport has some breaking changes inside, so we have to be careful while migrating.