Add log when there's no release tag

Author: iangmaia

fastlane/Fastfile

@@ -90,6 +90,7 @@ platform :android do
     base_ref_for_hotfix = if git_tag_exists(tag: previous_version)
                             previous_version
                           elsif Fastlane::Helper::GitHelper.branch_exists_on_remote?(branch_name: previous_release_branch)
+                            UI.message("ℹ️  Tag #{previous_version} not found. Using release branch #{previous_release_branch} as the base for hotfix instead.")
                             previous_release_branch
                           else
                             UI.user_error!("Neither tag #{previous_version} nor branch #{previous_release_branch} exists! A hotfix branch cannot be created.")