- Update to 5.4.3
## New features
* Add support for QDarkstyle 3.1
* Add support for Jupyter-client 8
* Add mambaforge and miniforge when searching for conda
environments
## Important fixes
* Fix IPython Console completions, traceback handling and other
issues to better support IPython 8.x
* Fix compatibility issues with PyZMQ 25.x
* Add warning message before loading spydata files
* Fix web based widgets display by adding the --no-sandbox
argument for QtApplication
* Fix copy and paste shortcuts for the Files and Projects
explorer panes
* Fix Editor issues related with handling LSP server failed
starts
* Fix Editor issues related with restoring previous session and
file changes outside Spyder
* Fix PYTHONPATH manager showing extra paths and other related
errors
* Fix update available notification with pip based installations
* Fix some UX/UI issues for the find replace widget when the
Editor has a small width
* Removal of Python 2 related code