TOMToolkit should support Python 3.12, 3.13

[phycodurus]

These are the current Python versions and we should support them.

[jchate6]

Currently 3.13 is incompatible with 3.9 which is still supported until the eol in October.
We have (hopefully) fully upgraded to support 3.9-3.12.
We should make a plan for phasing out 3.9 in October and introducing 3.13.
If we want to try to support both 3.13 AND 3.9, This is possible, but from my tests will take quite a bit of work in pypoject.toml, that will only be relevant for another 2 months.

[jchate6]

Are there actual users who require 3.13 support right now?

[Fingel]

Related: TOMToolkit/make-tom#10
Unqualified installations of tomtoolkit via pip are installing very old versions on 3.13 now.