Pandas 2 Compatibility

[emarinier]

Addresses: #184

[apetkau]

Thanks so much. This looks great. A few comments:

1. Can you change the GitHub Actions file so that:
   1. The restriction on the pandas version no longer exists (also remove the restriction on the numpy version, since I forget why it's there, so we'll see if the tests still all work).
      

      staramr/.github/workflows/ci-test.yml

      Line 28 in e973509

      other-packages: "mlst 'numpy <1.23.5' 'pandas <2'"

   2. Update the integration tests to work with Python 3.11 (latest). We could have both 3.7 and 3.11, but I think just testing on one Python version is okay.
      

      staramr/.github/workflows/ci-test.yml

      Line 27 in e973509

      - python-version: "3.7"

2. Add an entry to the CHANGELOG.md on this change.

[emarinier]

I updated the GitHub workflow, as you recommended, but I also had to add perl-list-moreutils as a conda dependency.

I think we'll also have to make similar changes to the instructions to install development / release versions at some point too.

[apetkau]

Thanks so much for these changes. This looks great :)