Remove deprecation warning

[Spacetown]

Remove the deprecation warnings:

INFO    -  DeprecationWarning: warning_filter doesn't do anything since MkDocs 1.2 and will be removed soon. All messages on the `mkdocs` logger get counted automatically.
             File "xxx/.venv/lib/python3.9/site-packages/mkdocs_multirepo_plugin/util.py", line 10, in <module>
               from mkdocs.utils import warning_filter
             File "xxx/.venv/lib/python3.9/site-packages/mkdocs/utils/__init__.py", line 453, in __getattr__
               warnings.warn(
INFO    -  Building documentation...
INFO    -  Multirepo plugin importing docs...
✅ xxx
INFO    -  Cleaning site directory
INFO    -  DeprecationWarning: _filter_paths is not used since MkDocs 1.5 and will be removed soon.
             File "xxx/.venv/lib/python3.9/site-packages/mkdocs_multirepo_plugin/structure.py", line 444, in get_files
               if _filter_paths(basename=dirname, path=path, is_dir=True, exclude=exclude):
             File "xxx/.venv/lib/python3.9/site-packages/mkdocs/structure/files.py", line 394, in _filter_paths
               warnings.warn(

Removing the function _filter_paths will also add support to include files in dot folders, dot files and the template folder.
To generate the documentation in ADO project we need to reference the pipeline in the folder .azuredevops and if you're documenting helm charts you have a folder templates.

[github-actions]

Version Number Check

Version has been updated in pyproject.toml.

[jdoiro3]

First off, thanks for contributing and using the plugin. I left a few suggestions/comments for you to address. I'm trying to get better at the version bumps and suggest we change the version to 0.7.0 since the other change part of this release isn't just a bugfix and changes behavior. Let me know if you don't agree.