Increment search version

Important so that new customers get this updated list. Recent change was
made in #25627 but it didn't
update this value.

Fixes brave/brave-browser#41112 for new users

components/search_engines/brave_prepopulated_engines.cc

@@ -13,7 +13,7 @@ namespace TemplateURLPrepopulateData {
 
 // IMPORTANT! Make sure to bump this value if you make changes to the
 // engines below or add/remove engines.
-const int kBraveCurrentDataVersion = 28;
+const int kBraveCurrentDataVersion = 29;
 // DO NOT CHANGE THIS ONE. Used for backfilling kBraveDefaultSearchVersion.
 const int kBraveFirstTrackedDataVersion = 6;