Log Message:
Update to 0.47

Upstream changes:
0.47 Wed 07 Sep 2022 04:33:20 PM PDT
    - Fix Pg reverse-engineering of default values in Pg v12+

0.46 unreleased (2016)
    - Add IF EXISTS to DROP INDEX (except under MySQL)
    - Fix table fetching for Sybase and SQLite drivers; refactor table fetching
      into a driver-overridable DBIx::DBSchema::DBD->tables method, patches
      from Nathan Anderson <http://1id.com/=nathan.anderson>