Fix version specification regular expression pattern

[mandeep]

fixes #25
fixes #33

This regular expression matches the specification provided in the package match specifications: https://conda.io/docs/user-guide/tasks/build-packages/package-spec.html#build-version-spec

I'm no regular expression expert, so if there's something that is more efficient please let me know.

[msarahan]

Thanks @mandeep

[mariusvniekerk]

@mandeep @msarahan Can we have a release for this? With the recent release of 3.0.1 on conda-forge it fails verification on several recipes.

[msarahan]

@mariusvniekerk 3.0.2 is tagged. It is known to fail tests with conda-build 3, but we think those are OK (conda-build stripping out errors before conda-verify sees them - not ideal, but functional).

[mariusvniekerk]

👍 yay

[github-actions]

Hi there, thank you for your contribution!

This pull request has been automatically locked because it has not had recent activity after being closed.

Please open a new issue or pull request if needed.

Thanks!