Update requirements.txt

Updating PTF commit hash to recent update. 

Signed-off-by: Trevon <[email protected]>

Author: trvon

requirements.txt

@@ -3,7 +3,7 @@
 pyroute2==0.7.3
 ply==3.11
 # Version 0.10.0
-ptf @ git+https://github.com/p4lang/ptf@d016cdfe99f2d609cc9c7fd7f8c414b56d5b3c5c
+ptf @ git+https://github.com/p4lang/ptf@77a5ba448f3db54b45a03a6235b7cec8c8c7d093
 # FIXME: We should figure out a way to synchronize P4Runtime versions across CMake and Python.
 # This is the same commit hash as defined in the top-level CMakelists.txt
 p4runtime @ git+https://github.com/p4lang/p4runtime@ec4eb5ef70dbcbcbf2f8357a4b2b8c2f218845a5#subdirectory=py