fix: correct username casing in CODEOWNERS file

Author: LadyKerr

CODEOWNERS

@@ -1,5 +1,5 @@
 # These owners will be the default owners for everything in
 # the repo. Unless a later match takes precedence,
-# @karasowles, @andreagriffiths, @ladykerr, and @cassidoo will be requested for
+# @karasowles, @AndreaGriffiths11, @ladykerr, and @cassidoo will be requested for
 # review when someone opens a pull request.
-*       @karasowles @andreagriffiths @ladykerr @cassidoo
+*       @karasowles @AndreaGriffiths11 @ladykerr @cassidoo