Make a new release in GitLab until they add this as a sorely-needed point-and-click feature

New-GitLabRelease.ps1

#Requires -Version 3.0
#for Invoke-WebRequest

###
### FILL OUT THESE FIELDS
###
# You will need the following three pieces of information.
$GitLabServerAndPort = "gitlab.tailspintoys.com:4443"  # the colon and port number can be omitted if it's 443
$APIAccessToken      = "foo"   # you can generate an API token in settings.
$ProjectID           = "123"   # the number shown on the project home page.

# You will also need to create the following.
# For more information, see https://docs.gitlab.com/ee/api/releases/index.html#create-a-release
$ReleaseName        = "Cool New Version 1.1 (Codename: Fabrikam)"
$ReleaseTagName     = "v1.1"
$ReleaseDescription = "This version fixes some stuff from version 1.0.  My bad."
$ReleaseCommitSHA   = "0123456789abcdef0123456789abcdef01234567"

###
### STOP EDITING
###
$args = {
    Uri    = "https://$GitLabServerAndPort/api/v4/projects/$ProjectID/releases"
    Method = "POST"
    Header = @{"PRIVATE-TOKEN" = $APIAccessToken}
    Body   = @{
        id          = $ProjectID
        name        = $ReleaseName
        tag_name    = $ReleaseTagName
        description = $ReleaseDescription
        ref         = $ReleaseCommitSHA
    }
}
Invoke-WebRequest @args