Deprecate logging.Configuration, rename to logging.LoggingConfiguration

Breaking change... server side you mean? If it's client side, I would deprecate the old class and do the following

https://stackoverflow.com/a/9008509

```py
def OldClsName(*args, **kwargs):
from warnings import warn
warn("Deprecated class. Use ``NewClsName``. Support will be removed in next minor version.")
return NewClsName(*args, **kwargs)
```

In whatever version you want, you remove support for it. Leave some time for end users to adapt in the meantime. The "old class" will no longer be a class but a function with the previous approach. But this should work.

_Originally posted by @RobPasMue in https://github.com/ansys/pymechanical/pull/308#discussion_r1284501871_

The issue names logging.Configuration and the proposed logging.LoggingConfiguration, but no files, tests, or entry points. Start by locating references to the old class and review the linked pull-request discussion, including whether the change is server-side or client-side. Done means the renamed API works and the old name follows the agreed deprecation and removal approach.

Written by the indexing model from the issue text.