zarr 3 migration

[dnelson86]

It seems zarr v3 is a major update (https://zarr.readthedocs.io/en/latest/user-guide/v3_migration.html). Any updates to scida needed before the version requirement of zarr can be unpinned?

[cbyrohl]

We can start migrating. This will require dropping support for python3.9 and python 3.10.

[dnelson86]

Ah I see, no rush then.

[cbyrohl]

Let's reconsider later this year. If/once we introduce kerchunk support, which only supports zarr v3 since the end of last year, we might naturally bump to zarr-v3 and py>=3.11.