Vendor updates

See merge request gitlab-org/gitlab-shell!264

Revert "Merge branch 'zj-rename-gitalypb' into 'master'"

See merge request gitlab-org/gitlab-shell!263

This reverts merge request !262

Upgrade gitaly Client dependency

See merge request gitlab-org/gitlab-shell!262

The client now has TLS support. So this gets pulled into this component.
To make it work, we have to upgrade the proto too.

Release v8.4.3

See merge request gitlab-org/gitlab-shell!259

Remove circular dependency between HTTPHelper and GitlabNet

Closes #169

See merge request gitlab-org/gitlab-shell!258

HttpHelper depended on exceptions defined in GitLabNet, but GitLabNet
included HttpHelper. Specs in Ruby 2.5 were breaking as a result of
Action::Custom not able to reference constants in GitLabNet:
https://gitlab.com/gitlab-org/gitlab-shell/-/jobs/126362702.

Closes https://gitlab.com/gitlab-org/gitlab-shell/issues/169

Release v8.4.2

See merge request gitlab-org/gitlab-shell!255

Include LFS operation when requesting auth

See merge request gitlab-org/gitlab-shell!254

Operation is either upload or download

Adds handling of Net::HTTPGatewayTimeOut exception to GitlabNet

See merge request gitlab-org/gitlab-shell!251

Use Gitaly's v2 auth scheme

Closes gitaly#1319

See merge request gitlab-org/gitlab-shell!250

Update overview in readme

See merge request gitlab-org/gitlab-shell!248

Remove mistaken support for `gitlab-shell user-123`

Closes #151

See merge request gitlab-org/gitlab-shell!247

Feature flag for go/ruby gitlab-shell implementations

Closes #74

See merge request gitlab-org/gitlab-shell!233

Since the Go code now wraps the Ruby script, this makes sense and tests
the interaction of the two codebases. Over time, the number of Ruby
tests to run will approach 0.

Display helpful feedback when proxying an SSH git push to secondary request  (v2)

See merge request gitlab-org/gitlab-shell!246

Merge 8-3-stable branch changes into master

Closes #155

See merge request gitlab-org/gitlab-shell!245

Display helpful feedback when proxying an SSH git push to secondary request

See merge request gitlab-org/gitlab-shell!244

This also cleans up the output from the tests as previously, Base64 encoded output was printed.