Regression in tests caused by pandas fixed by pandas 2.1.4

[willu47]

Resolves the failing tests which were caused by a regression in version 2.1.0 of pandas.

Description

I ran tests for Python 3.9 and pandas v2.1.0 through v2.1.4. All tests pass for the latest version (v2.1.4) of pandas.

The version pin has been updated to force use of pandas 2.1.4 and later.

Also, a future deprecation issue was resolved.

Issue Ticket Number

Closes #194

Documentation

[trevorb1]

@willu47, LGTM! I made two small changes:

• Updated pandas version in docs/requirements.txt
• Added a changelog note

When I run tests with python 3.11.5 and pandas v2.1.4 everything works fine. But if I bump to python 3.12.0 (the default conda install) I get the following warnings. I will add this to a new issue though, as this is now a datetime warning and not a pandas issue

============================================================ warnings summary ============================================================
.tox/default/lib/python3.12/site-packages/dateutil/tz/tz.py:37
  /home/trevorb1/master/otoole/.tox/default/lib/python3.12/site-packages/dateutil/tz/tz.py:37: DeprecationWarning: datetime.datetime.utcfromtimestamp() is deprecated and scheduled for removal in a future version. Use timezone-aware objects to represent datetimes in UTC: datetime.datetime.fromtimestamp(timestamp, datetime.UTC).
    EPOCH = datetime.datetime.utcfromtimestamp(0)

tests/test_convert.py: 7 warnings
tests/test_read_strategies.py: 2 warnings
tests/test_utils.py: 2 warnings
tests/test_write_strategies.py: 1 warning
  /home/trevorb1/master/otoole/.tox/default/lib/python3.12/site-packages/openpyxl/packaging/core.py:99: DeprecationWarning: datetime.datetime.utcnow() is deprecated and scheduled for removal in a future version. Use timezone-aware objects to represent datetimes in UTC: datetime.datetime.now(datetime.UTC).
    now = datetime.datetime.utcnow()

tests/test_convert.py::TestWrite::test_write_excel
tests/test_write_strategies.py::TestWriteExcel::test_write_out_empty_dataframe
  /home/trevorb1/master/otoole/.tox/default/lib/python3.12/site-packages/openpyxl/writer/excel.py:292: DeprecationWarning: datetime.datetime.utcnow() is deprecated and scheduled for removal in a future version. Use timezone-aware objects to represent datetimes in UTC: datetime.datetime.now(datetime.UTC).
    workbook.properties.modified = datetime.datetime.utcnow()

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html

---------- coverage: platform linux, python 3.12.0-final-0 -----------
Coverage HTML written to dir htmlcov

============================================== 209 passed, 1 skipped, 15 warnings in 50.15s ==============================================