net/freerdp3: use patch from mastar branch

Use a patch from the master branch instead of a patch from a pull
request that does not belong to any branch in this repository.
The contents of the patch have not changed.

Approved by: arrowd (mentor, implicit)
MFH: 2024Q2

(cherry picked from commit abb53c26871fba80cc76ee4264a3fb8d05e895f7)