How to download a GitHub artifact using PowerShell?

Last day I was struggling to download a GitHub artifact. Tried with invoke-webrequest, web session and even with curl. After reading the GitHub documentation, it seems to be possible with the GitHub API.
The only requirement is that you have a GitHub connection token. Read the following article about how to create a GitHub connection token.

Below a sample script how to download a GitHub artifact.

$baseApi = 'https://api.github.com/repos/username/reponame/actions/artifacts/someid/zip'
$dest = "c:\temp\someartifact.zip"
$connectionToken = 'ghp_################'
$base64AuthInfo= [System.Convert]::ToBase64String([System.Text.Encoding]::ASCII.GetBytes(":$($connectionToken)"))
Invoke-RestMethod -Uri $uri -Headers @{authorization = "Basic $base64AuthInfo"} -Method Get -outfile $dest

$baseApi = 'https://api.github.com/repos/username/reponame/actions/artifacts/someid/zip'

$dest = "c:\temp\someartifact.zip"

$connectionToken = 'ghp_################'

$base64AuthInfo= [System.Convert]::ToBase64String([System.Text.Encoding]::ASCII.GetBytes(":$($connectionToken)"))

Invoke-RestMethod -Uri $uri -Headers @{authorization = "Basic $base64AuthInfo"} -Method Get -outfile $dest

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