Updates embedded H2 driver to v2.1.212. When a local H2 v1 file-based application database is detected, it will be
automatically updated in-place at startup. Migrations and tests have been updated to account for changes in H2
behavior. Sample data and test harness database files in the repo have all been updated to H2 v2 file format.

Co-authored-by: Braden Shepherdson <braden@metabase.com>
Co-authored-by: Cam Saul <github@camsaul.com>
Co-authored-by: Cam Saul <1455846+camsaul@users.noreply.github.com>