remove pandas~=1.5 pin

[tschaume]

@ml-evs we would like to upgrade to pandas 2 for MP. Would it be possible to remove the pandas requirement in matminer?

[ml-evs]

Could you also update it in the pinned ci versions so we know what works/what doesn't? I didn't add the upper bound but presumably something breaks without it

I stalled in my other dep update PR, can't remember if I tried to update pandas there

[ml-evs]

Could you also update it in the pinned ci versions so we know what works/what doesn't? I didn't add the upper bound but presumably something breaks without it

I stalled in my other dep update PR, can't remember if I tried to update pandas there

Feel free to merge this in the meantime btw

[tschaume]

@ml-evs I ran the upgrade-dependencies action and merged the update requirements files (see #891).

[ml-evs]

Thanks, the issue I had with that PR is that the tests were never actually running in the CI, and several changes were needed to get them to pass in #908, I can take a look at this again this month if I get time

[ml-evs]

@tschaume just back from holiday and have checked this, lots of test failures and some incompatibility with pandas 2 at the moment, have made some changes in #912 but there are still lots of spurious test failures. If matminer is in use at MP would someone be able to take a look at these to accommodate the deps update?

[tschaume]

@ml-evs Thanks! We unfortunately don't have any bandwidth to help with the matminer development or maintenance. @ardunn any chance you have some cycles left over to look at this? Thanks!