DBD::SQLite 1.72 breaks t/postgresql.t because SQL columns names are compared case sensitively

First discovered in pipeline https://gitlab.com/coocook/coocook/-/jobs/3285000523

Test t/postgresql.t passes with DBD-SQLite 1.70 but fails with 1.72.

Trigger for changed behavior seems to be:

1.71_05 2022-02-26
    - ...
    - Lowercase datatype in table column metadata for backcompat

from https://metacpan.org/release/ISHIGAKI/DBD-SQLite-1.72/source/Changes