Replace pkg_resources version lookup

[Mirochill]

Summary

• replace the deployment provenance package-version lookup with importlib.metadata.version()
• remove the pkg_resources import from deployment.py
• keep the existing fallback to explicit module version attributes when no installed distribution version can be found

Fixes #182.

Validation

• Not run locally

[Felipe-CdS]

LGTM Please switch the target branch to staging and set the PR as ready for review.

Btw, are you a UFF student? Are using noWorkflow in a research? How did you heard about our project? We are looking for real life examples using noWorkflow to understand how people use it, so it would be cool to listen your experience trying out the tool, if you don't mind.