Add new OS in the system requirements

Add Windows Server 2019 in the system requirements for bcp

Author: mufukuha

docs/tools/bcp-utility.md

@@ -64,7 +64,7 @@ The new BCP supports Azure AD authentication, including Multi-Factor Authenticat
 
 ### System Requirements
 
-Windows 10, Windows 7, Windows 8, Windows 8.1, Windows Server 2008, Windows Server 2008 R2, Windows Server 2008 R2 SP1, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016
+Windows 10, Windows 7, Windows 8, Windows 8.1, Windows Server 2008, Windows Server 2008 R2, Windows Server 2008 R2 SP1, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Server 2019
 
 This component requires both [Windows Installer 4.5](https://www.microsoft.com/download/details.aspx?id=8483) and [Microsoft ODBC Driver 17 for SQL Server](https://www.microsoft.com/download/details.aspx?id=56567).