Release v13.22.0

Diff: v13.21.0...main

GitLab MR: gitlab!74362 (merged)

In CHANGELOG:

- Relax key and username matching for sshd !540
- Add logging to handler/exec.go and config/config.go !539
- Improve logging for non-git commands !538
- Update to Go v1.16.9 !537
- Reject non-proxied connections when proxy protocol is enabled !536
- Log command invocation !535
- Fix logging channel type !534
- Resolve an error-swallowing issue !533
- Add more logging to gitlab-sshd !531
- Respect log-level configuration again !530
- Only validate SSL cert file exists if a value is supplied !527
- Improve err message given when Gitaly unavailable !526
- makefile: properly escape '$' in VERSION_STRING !525
- Add context fields to logging !524
- Extract server config related code out of sshd.go !523
- Add TestInvalidClientConfig and TestNewServerWithoutHosts for sshd.go !518
- Update Ruby version to 2.7.4 and add Go version 1.16.8 for tooling !517

Not in CHANGELOG:

- Fix golang definition in tool versions !542
- Unit test exit-codes for sshd/session.go !522
- Unit test sshd.handleEnv function !521
- refactor: unify instantiation of command.Shell !520
- Fix a flaky test !519
- refactor: remove call to BuildNameToCertificate (deprecated) !515
- refactor: rearchitect command and executable Go modules !514
- build: move build task to the top of the Makefile !513
- refactor: move away from ioutil (deprecated) !511
- ci: start integrating go 1.17 into the CI pipelines !510
- build: bump go version to 1.16 !509
- refactor: update usage of NewHTTPClient to NewHTTPClientWithOpts !507
- refactor: remove commandargs.GenericArgs !506
- build: bump go to 1.15 !505