Update Dixie Sanderson username to CobaltBlueHeron

Author: GitHub Workshop Bot

registration-data.csv

@@ -103,5 +103,5 @@
 "176","OPEN","3/7/2026 15:30","brlgirl","","","","Manual add - Day 1","","","pending"
 "177","OPEN","3/7/2026 15:30","cindyseeingblind","Cindy","","","Manual add - Day 1","","","pending"
 "178","OPEN","3/7/2026 15:30","ahmat-lawyer","","","","Manual add - Day 1","","","pending"
-"179","OPEN","3/7/2026 15:30","Dixie.Sanderson","Dixie","Sanderson","","Manual add - Day 1","","Email: Dixie.Sanderson@gmail.com","pending"
+"179","OPEN","3/7/2026 15:30","CobaltBlueHeron","Dixie","Sanderson","","Manual add - Day 1","","Email: Dixie.Sanderson@gmail.com","pending"
 "180","OPEN","3/7/2026 15:30","irnakas","","","","Manual add - Day 1","","Email: irnakas@gmail.com","pending"