drop optional pyarrow for pandas 3.x

[bjlittle]

🚀 Pull Request

Description

This pull-request drops the optional pyarrow package.

This package was only added to remove the following DeprecationWarning being issued by pandas 2.2.0 (see #657):

DeprecationWarning: 
Pyarrow will become a required dependency of pandas in the next major release of pandas (pandas 3.0),
(to allow more performant data types, such as the Arrow string type, and better interoperability with other libraries)
but was not found to be installed on your system.
If this would cause problems for you,
please provide us feedback at https://github.com/pandas-dev/pandas/issues/54466

However, from reading issue pandas-dev/pandas#54466 which is collating community feedback, concerns were raised about the increased footprint from installing pyarrow.

Subsequently, this DeprecationWarning was removed in pandas patch release 2.2.1 and included as an optional install i.e., pip install pandas[pyarrow] (see here and here).

As a result, we can drop the inclusion of pyarrow, which is also a blocker in our py313 support (see here) 🙏

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.28%. Comparing base (81bbca0) to head (7c58ee8).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1178   +/-   ##
=======================================
  Coverage   91.28%   91.28%           
=======================================
  Files          58       58           
  Lines        2939     2939           
=======================================
  Hits         2683     2683           
  Misses        256      256           

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[bjlittle]

Reference #1179

Removing pyarrow has resulted in a reduction of 38 packages from both the py311 and py312 environments 🥳

... and we can also resolve a full developer py313 environment for the first time 🚀