Deprecation warnings from `traitlets`

I'm getting two deprecation warnings: ``` INFO - DeprecationWarning: 5.x style template file passed '/anaconda/envs/azureml_py38/lib/python3.8/site-packages/mknotebooks/templates/custom_markdown.tpl'. Use --template-name for the template directory with a index.<ext>.j2 file and/or --template-file to denote a different template. File "/anaconda/envs/azureml_py38/lib/python3.8/site-packages/traitlets/traitlets.py", line 1431, in _notify_observers c(event) File "/anaconda/envs/azureml_py38/lib/python3.8/site-packages/nbconvert/exporters/templateexporter.py", line 233, in _template_file_changed warnings.warn( ``` and ``` INFO - DeprecationWarning: Passing unrecognized arguments to super(HTMLExporter).__init__(template_path=['/anaconda/envs/azureml_py38/lib/python3.8/site-packages/mknotebooks/templates', '/home/azureuser/.local/share/jupyter/nbconvert/templates/base', '/anaconda/envs/azureml_py38/share/jupyter/nbconvert/templates/base', '/usr/local/share/jupyter/nbconvert/templates/base', '/usr/share/jupyter/nbconvert/templates/base']). object.__init__() takes exactly one argument (the instance to initialize) This is deprecated in traitlets 4.2.This error will be raised in a future release of traitlets. File "/anaconda/envs/azureml_py38/lib/python3.8/site-packages/traitlets/config/configurable.py", line 85, in __init__ super().__init__(**kwargs) File "/anaconda/envs/azureml_py38/lib/python3.8/site-packages/traitlets/traitlets.py", line 1246, in __init__ warn( ``` Both seem related to `traitlets`. ``` mknotebooks 0.7.1 traitlets 5.3.0 mkdocs-material 8.5.10 mkdocs-material-extensions 1.1.1 mkdocs 1.4.2 ``` Tested using Python 3.8.5 and 3.9.12, both on Ubuntu 20.04