mux: updating PR status issue

[PertsevRoman]

Community Note

I'll try to fix the bug, please follow comments of the issue

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Overview of the Issue

Altantis should be able to provide workflow logs during apply. We're facing with issue below and logs can't be shown.
This happens in GitLab projects

Reproduction Steps

1. Create MR in multiple-level folder (Gitlab)
2. Make atlantis plan/apply

Logs

{"level":"error","ts":"2022-01-26T08:28:34.749Z","caller":"events/project_command_runner.go:156","msg":"updating project PR status%!(EXTRA *errors.withS
tack=creating job url for org-name/department/subdepartment/tucson/tucson-name/repo-name/1/folder-name/default: mux: variable \"org-name/department/subdepartment/tucson/tucson-name\" doesn't match, expected \"^[^/]+$\")","json":{"repo":"org-name/department/subdepartment/tucson/tucson-name/repo-name","pull":"1"},"stacktrace":"github.com/runatlantis/atlantis/server/events.(*ProjectOutputWrapper).updateProjectPRStatus\n\tgithu
b.com/runatlantis/atlantis/server/events/project_command_runner.go:156\ngithub.com/runatlantis/atlantis/server/events.(*ProjectOutputWrapper).Apply\n\tg
ithub.com/runatlantis/atlantis/server/events/project_command_runner.go:133\ngithub.com/runatlantis/atlantis/server/events.runProjectCmds\n\tgithub.com/r
unatlantis/atlantis/server/events/project_command_pool_executor.go:47\ngithub.com/runatlantis/atlantis/server/events.(*ApplyCommandRunner).Run\n\tgithub
.com/runatlantis/atlantis/server/events/apply_command_runner.go:146\ngithub.com/runatlantis/atlantis/server/events.(*DefaultCommandRunner).RunCommentCom
mand\n\tgithub.com/runatlantis/atlantis/server/events/command_runner.go:259"}

Environment details

Atlantis version: 0.18.1, 0.18.2
Helm chart: 0.13.5

Additional Context

See #2012