regen README.md

Author: omar-polo

README.md

@@ -44,4 +44,4 @@ Gilles Chehade <[gilles@poolp.org](mailto:gilles@poolp.org)>.
 The conversion to the stdio protocol was done by
 Omar Polo <[op@openbsd.org](mailto:op@openbsd.org)>.
 
-Nixpkgs - April 21, 2024
+OpenBSD 7.5 - April 21, 2024