[css-fonts-4][editorial] Update acknowledgments

Author: svgeesus

css-fonts-4/Overview.bs

@@ -8664,6 +8664,10 @@ Peter Constable for assorted language fixes.
 
 Optical sizing <a href="#optical-size-example">image</a> prepared by Nick Sherman.
 
+Urdu samples prepared by Richard Ishida.
+
+Munira Tursunova and Dominik Röttsches developed the features for animating font-palette.
+
 John Hudson was kind enough to take the time to explain the subtleties of OpenType language tags 
 and provided the example of character variant usage for displaying text on Byzantine seals.