[MAINT] Pandas deprecation notices

[jbogaardt]

Is your feature request related to a problem? Please describe.

There are several pandas deprecation notices with pandas 2.2 and later. These should be handled and silenced. The most common is our usage of the infer_datetime_format.

chainladder/core/base.py:250: UserWarning: The argument 'infer_datetime_format' is deprecated and will be removed in a future version. A strict version of it is now the default, see https://pandas.pydata.org/pdeps/0004-consistent-to-datetime-parsing.html. You can safely remove this argument.

Is your feature request at odds with the scope of the package?
No

Describe the solution you'd like
No pesky deprecation notices regardless of which version of pandas is installed.

[kennethshsu]

@jbogaardt did you resolve this?

[jbogaardt]

I have not, but it probably makes the most sense to explicitly set date formats of datasets within the package to silence it for training purposes, but otherwise persist the deprecation.

[kennethshsu]

Hmm, can you elaborate more on what you mean?

There's a PR on what I think fixes the issue, it's just using the version package to check for versions.