remove quotes from python version in bootstrap request URL (#32433)

tools/bootstrap/python_.ps1

@@ -18,7 +18,7 @@ function ExtractVersion {
 	param([string] $Path, [string] $Key)
 	foreach ($Line in Get-Content $Path) {
 		if ($Line.StartsWith("export $Key=")) {
-			return $Line.Substring("export $Key=".Length)
+			return $Line.Substring("export $Key=".Length).Trim('"')
 		}
 	}
 	throw "Couldn't find value for $Key in $Path"
@@ -42,10 +42,9 @@ if (!(Test-Path $PythonExe -PathType Leaf)) {
 	New-Item $Cache -ItemType Directory -ErrorAction silentlyContinue | Out-Null
 
 	$Archive = "$Cache/python-$PythonVersion-embed.zip"
-	Invoke-WebRequest `
-		"https://www.python.org/ftp/python/$PythonVersion/python-$PythonVersion-embed-amd64.zip" `
-		-OutFile $Archive `
-		-ErrorAction Stop
+	$RequestUrl = "https://www.python.org/ftp/python/$PythonVersion/python-$PythonVersion-embed-amd64.zip"
+	Write-Output "Downloading from: $RequestUrl"
+	Invoke-WebRequest $RequestUrl -OutFile $Archive -ErrorAction Stop
 
 	[System.IO.Compression.ZipFile]::ExtractToDirectory($Archive, $PythonDir)