Update Savannah's last name (#1663)

Author: savannahostrowski

core-team/core-team.csv

@@ -3,7 +3,7 @@ Tomas Roun,tomasr8,2025-06-16,,
 Peter Bierma,ZeroIntensity,2025-06-16,,
 Diego Russo,diegorusso,2025-05-13,,
 Bénédikt Tran,picnixz,2025-01-10,,
-Savannah Bailey,savannahostrowski,2024-11-13,,
+Savannah Ostrowski,savannahostrowski,2024-11-13,,
 Matt Page,mpage,2024-10-10,,
 Kirill Podoprigora,Eclips4,2024-09-20,,
 Ned Batchelder,nedbat,2024-07-16,,