fix: add DriverName field to Mapped Printers scanner

[kbaker827]

Summary

• Adds DriverName to the Select-Object output of the Mapped Printers scanner
• The value is already available from Win32_Printer; it just wasn't being selected

Change

- Get-CimInstance Win32_Printer | Where-Object Name -Like "\*" | Select-Object ShareName, Name, Default
+ Get-CimInstance Win32_Printer | Where-Object Name -Like "\*" | Select-Object ShareName, Name, DriverName, Default

Test plan

• Run scanner against a machine with mapped network printers and confirm DriverName appears in results

Closes #111