Spyder 6.0.4 release

[dalthviz]

This is an issue to track comments, questions, pending things, and general changes regarding dependencies done for the Spyder 6.0.4 release.

• Dependencies changes:

  • Release Spyder-kernels 3.0.3
  • Release Python-lsp-server 1.12.1 (Not required at the end).

• Release candidate (6.0.4.rc1):

  • PyPI: https://pypi.org/project/spyder/6.0.4rc1/
  • conda-forge: https://anaconda.org/conda-forge/spyder/files?version=6.0.4rc1 - https://anaconda.org/conda-forge/spyder-base/files?version=6.0.4rc1
  • GitHub release: https://github.com/spyder-ide/spyder/releases/tag/v6.0.4rc1