Bump build version to build against latest Eigen

[traversaro]

See #19 (comment) for the rationale.

Checklist

• 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)
• Re-rendered with the latest conda-smithy (Use the phrase @conda-forge-admin, please rerender in a comment in this PR for automated rerendering)
• Ensured the license file is being packaged.

[conda-forge-linter]

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.

[traversaro]

@conda-forge-admin, please rerender

[github-actions]

Hi! This is the friendly automated conda-forge-webservice.
I tried to rerender for you, but it looks like there was nothing to do.

[Tobias-Fischer]

Thanks @traversaro!

[Tobias-Fischer]

I suggest to go straight for #23 instead?

[traversaro]

I suggest to go straight for #23 instead?

Good idea!

[traversaro]

Superseded by #23 .

[jschueller]

I already bumped it in #21

[Tobias-Fischer]

Ahh .. in cartographer we have to use v1 of ceres-solver. I opened a PR for that branch in #24