MinPlatformPkg/Fsp: Rebase fail when python tools path exist whitespace

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3412



Python38 installation path have three options.
(a) C:\Users\<UserName>\AppData\Local\Program\Python\Python38
(b) C:\Python38
(c) C:\Program Files\Python38

Issue only happens on (a) and (c).
(a) happen on <UserName> have whitespace. Ex: Tony Chen
(c) happen on "Program Files" have whitespace.

Reviewed-by: Chasel Chiu <chasel.chiu@intel.com>
Cc: Chasel Chiu <chasel.chiu@intel.com>
Cc: Nate DeSimone <nathaniel.l.desimone@intel.com>
Signed-off-by: IanX Kuo <ianx.kuo@intel.com>