Checks if the current running Powershell Core environment is the latest version and download if it isn't

Get-LastestPowershellCoreMSI.ps1

[Version]$ReleaseVersion = (Invoke-RestMethod https://raw.githubusercontent.com/PowerShell/PowerShell/master/tools/metadata.json).ReleaseTag -replace '^v'
if ($PSVersionTable.PSEdition -like "Core" -and $ReleaseVersion -gt $PSVersionTable.PSVersion) {
    $latest = Invoke-RestMethod -Uri "https://api.github.com/repos/PowerShell/PowerShell/releases" | Where-Object { $_.tag_name -eq "v$ReleaseVersion" }
    $downloadUrl = $latest.assets | Where-Object Name -like "*win-x64.msi" | Select-Object -ExpandProperty 'browser_download_url'
    Invoke-WebRequest -Uri $downloadUrl -OutFile "$PSScriptRoot\$(Split-Path $downloadUrl -Leaf)"
}