Bump icechunk

[maxrjones]

FYI @abarciauskas-bgse

[abarciauskas-bgse]

@maxrjones thanks I was thinking about this but assumed it would break VirtualiZarr since icechunk>=alpha 10 requires zarr-python 3.0 (https://github.com/earth-mover/icechunk/blob/main/Changelog.python.md#python-icechunk-library-010a10) and I think zarr-python 3.0 will break VirtualiZarr

[abarciauskas-bgse]

⬆️ is why I'm currently using a custom branch of virtualizarr 😞 zarr-developers/VirtualiZarr#378

[maxrjones]

of course 😓

Do you have plans to update your branch for the newest icechunk release? Since we're not using Kerchunk, it would be nice to just use that in this image as you proposed in the other PR.

[maxrjones]

Closing in favor of #10

[abarciauskas-bgse]

We can use that branch and it should use the newest icechunk release (currently specified at icechunk>=0.1.0a10 and I just installed that branch on the hub and can verify it installs icechunk==0.1.0a15)