Preparations for possible breaking changes in upcoming releases of Numpy and/or pandas

[lbianchi-lbl]

Creating an issue to track this after @mrmundt brought this up.

Numpy

• Upcoming v2.0 has a number of backward-incompatible changes
  • https://numpy.org/devdocs/numpy_2_0_migration_guide.html

pandas

• pyarrow will become a requirement; causes a warning to be emitted on import (?)
  • See also Pyomo/pyomo#3102

[mrmundt]

Tagging for ease of finding later: numpy/numpy#24300