Bump version 9 0 4

[Guthur]

Checklist

• Used a 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)
• Re-rendered with the latest conda-smithy
• Ensured the license file is being packaged.

[conda-forge-webservices]

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.

[Guthur]

@conda-forge/core I am quite confident this repository has become orphaned from it's maintainer due the lack of activity from them on any of the recent PRs. Can you help merge this PR?
Thanks.

Additionally I'm willing to volunteer as an additional maintainer.

[hmaarrfk]

Thank you!

[bollwyvl]

Huh, guess I am signed up for this now? I mean... ok, but my need sorta moved on from here, but do recognize it's important.

@Guthur as you've poked the bear, please consider also adding yourself with a bot command issue.

[hmaarrfk]

sorry opps, i thoguth they added themselves . i got mixed up in the github handles.