Support Python 3.13

[valeriupredoi]

Description

Sister PR to ESMValGroup/ESMValCore#2566

so far the major bottleneck is ncl which has an autoPR for upgrade to newer proj conda-forge/ncl-feedstock#156 but that fails atm due to inconsistencies in conda-forge

Full list of incompatible dependencies (28/11/2024)

• curl <8.10 - note that 8.11 is Broken, so only 8.10 but that is at odds with Julia
• esmvalcore 2.11.* - we have support on branch, so v2.12 will be fine
• numba - imminent 0.61 will be fine
• psy-maps >=1.5.0 - @Chilipp is currently working on all psy-* subpackages (psy-plot is fine)
• psy-reg >=1.5.0 idem
• psy-simple >=1.5.0 idem
• xesmf >=0.7.1 via Numba (see above)
• ncl >=6.6.2

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[valeriupredoi]

OK I removed ncl for now (clearly a blocker, noqa), we need to rebuild pys2index for py3.13; next hurdle psy- packages! EDIT: just psy-simple actually

see main PR description