Skip Cython 3.0.3

[jni]

• Forbid Cython 3.0.3
• Increment build

See discussion starting at:

https://github.com/conda-forge/scikit-image-feedstock/pull/104#issuecomment-1754299020

Checklist

• [x] Used a personal fork of the feedstock to propose changes
• [x] Bumped the build number (if the version is unchanged)
• [x] 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.

[jni]

@conda-forge-admin, please rerender

[jakirkham]

Thanks Juan! 🙏

Encouraging to see this working so far

Guess the next thing will be raising a Cython issue based on what was seen with 3.0.3 compared to 3.0.2