Sort codeowners using case-insensitive (#10651)

Co-authored-by: J. Nick Koston <nick@koston.org>

script/build_codeowners.py

@@ -82,7 +82,7 @@ for path in components_dir.iterdir():
 
 
 for path, owners in sorted(codeowners.items()):
-    owners = sorted(set(owners))
+    owners = sorted(set(owners), key=str.casefold)
     if not owners:
         continue
     for owner in owners: