Get PBIs for merged PRs in dev that aren't in main

GetPbis.ps1

$token = '<access token>'
$auth = "Basic $([Convert]::ToBase64String([System.Text.ASCIIEncoding]::ASCII.GetBytes(":$token")))"
$headers = @{ "Authorization" = $auth }
$baseUrl = '<project url>'
$repoId = '<repo id>'
$prs = git log --pretty="%s" origin/main..origin/develop | Select-String 'Merged PR ' | % {$_.ToString().Split(' ')[2].TrimEnd(':')}

$prData = $prs | % { Invoke-RestMethod -Method Get "$baseUrl/_apis/git/repositories/$repoId/pullrequests/$($_)?api-version=6.0&includeWorkItemRefs=true" -Headers $headers }

$items = ($prData._links.workItems.href | % { Invoke-RestMethod -Method Get $_ -Headers $headers }).value.url | % { Invoke-RestMethod -Method Get "$($_)?`$expand=relations" -Headers $headers }

$tasks = $items | ? {$_.fields.'System.WorkItemType' -eq 'Task'}

$parents = ($tasks.relations | ? {$_.attributes.name -eq 'Parent'}).url | % { Invoke-RestMethod -Method Get $_ -Headers $headers }

$doneItems = ($items | ? {$_.fields.'System.WorkItemType' -ne 'Task'}) + $parents | ? {$_.fields.'System.State' -eq 'Done'}

$bugs = $doneItems | ? {$_.fields.'System.WorkItemType' -eq 'Bug'}
$pbis = $doneItems | ? {$_.fields.'System.WorkItemType' -eq 'Product Backlog Item'}

$bugs | % {"$($_.id) (Bug): $($_.fields.'System.Title')"} | Sort-Object -Unique
$pbis | % {"$($_.id) (PBI): $($_.fields.'System.Title')"} | Sort-Object -Unique