PEP 751: update acknowledgements (#4311)

Author: brettcannon

peps/pep-0751.rst

@@ -1470,7 +1470,9 @@ Acknowledgements
 
 Thanks to everyone who participated in the discussions on discuss.python.org.
 Also thanks to Randy Döring, Seth Michael Larson, Paul Moore, and Ofek Lev for
-providing feedback on a draft version of this PEP before going public.
+providing feedback on a draft version of this PEP before going public. Thanks to
+Randy Döring of Poetry, Charlie Marsh of uv, and Frost Ming of PDM for providing
+feedback on behalf of their respective projects.
 
 
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