Support Python 3.12

[mathemancer]

Problem

Mathesar works with Python 3.12, but there are some difficulties with the dependencies. Specifically, the versions of psycopg2-binary and pandas that we have specified haven't published wheels for Python 3.12, and so we have to build some things to install those packages on that version. psycopg2-binary is particularly bad, since building it requires a C header file that may or may not be installed on a user's system.

Proposed solution

We need to either

• figure out versions of psycopg2-binary and pandas that work more smoothly with all python versions we support, or
• use ranges in our version specification for those packages, or
• remove those dependencies (this will happen anyway as part of the backend overhaul).

Additional context

The C header file needed by psycopg2-binary is libpq-fe.h. On Debian 12, that's provided by the libpq-dev package.