STY: version cap on numpy

[jklenzing]

Description

The cdf interface doesn't like numpy 1.24.0. I see some issues with both cdflib and pysatCDF. Adds a version cap here to fix this for the time being.

Specific failures documented at #142 and pysat/pysatCDF#46

Type of change

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

Github Actions and local tests.

Test Configuration

Github Actions suite.

Checklist:

• Make sure you are merging into the develop (not main) branch
• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules
• Add a note to CHANGELOG.md, summarizing the changes
• Update zenodo.json file for new code contributors