Can't see it either, probably some older versions of Oledb object.
But you can update it by yourself, simply add 'Connection string' input into 'Set connection' action (store it in 'Connection string' data item on Initial page) and on a same page create new Decision stage right after Start with value [Connection String]"""".
If No then continue to Decision 'Provider Set?' if Yes go to End (without this it will rewrite your connection string every time)
Tested and working, thank you so much John, I was always using local odbc db, but it is way better