Update to version 6.0.0a3

[dalthviz]

Dependencies changes:

• ipython >=8.12.2,<9.0.0,!=8.17.1
• jedi >=0.17.2,<0.20.0
• pyqt >=5.15,<5.16
• pyqtwebengine >=5.15,<5.16
• python-lsp-server >=1.9.0,<1.10.0
• qdarkstyle >=3.2.0,<3.3.0
• qtawesome >=1.3.0
• qtconsole >=5.5.0,<5.6.0
• qtpy >=2.4.0
• spyder-kernels >=3.0.0b3,<3.0.0b4
• superqt >=0.6.1,<1.0.0

Other changes:

• Remove constraint for importlib-metadata to workaround flake8 issue with Python < 3.8

Checklist

• [x] Used a personal fork of the feedstock to propose changes
• [ ] Bumped the build number (if the version is unchanged)
• [ ] Reset the build number to 0 (if the version changed)
• [x] Re-rendered with the latest conda-smithy (Use the phrase code>@<space/conda-forge-admin, please rerender in a comment in this PR for automated rerendering)
• [x] Ensured the license file is being packaged.

[conda-forge-webservices[bot]]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

[dalthviz]

@conda-forge-admin, please rerender

[conda-forge-webservices[bot]]

Hi! This is the friendly automated conda-forge-linting service.

I wanted to let you know that I linted all conda-recipes in your PR (recipe) and found some lint.

Here's what I've got...

For recipe:

• Selectors are suggested to take a <two spaces>#<one space>[<expression>] form. See lines [15]

[conda-forge-webservices[bot]]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

[ccordoba12]

@conda-forge-admin, please rerender