Support for JupyterLab 4.0

[nataquinones]

Hello, This is a great extension, but the current version (0.6.1) does not work with >JupyterLab 4.0. Would be awesome to support it. Thanks!

[krassowski]

Version v0.7.1 supporting JupyterLab 4+ is now available on PyPI and should be on conda-forge soon:

• https://pypi.org/project/jupyterlab-spreadsheet-editor/0.7.1/
• https://anaconda.org/conda-forge/jupyterlab-spreadsheet-editor