Update enscons to 0.30.0

[pyup-bot]

This PR updates enscons from 0.6.0 to 0.30.0.

Changelog

0.28.0

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- Update editables for approved PEP 660
- Fix zipfile **kwargs bug

0.27.0

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- Fix get_abi3_tag() to avoid manylinux
- Use packaging.tags instead of own tags implementation

0.26.0

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- Support PEP 621 metadata

0.25.0

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- Fix ;-separated package; marker handling.
- Automatically add `editable` target, building a special wheel that redirects
imports for your modules to the source code.

0.23.0

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- Add support for `scons develop` for editable installs, automatically builds
required metadata if missing. Requires change to `SConstruct` compared to
previous `setup.py` emulation.

0.22

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- Improved ABI3 support for Windows by vendoring `packaging.tags`

0.21.0

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- New functions for C extensions:
`enscons.cpyext.extension_filename(modname, abi3=False)` and
`enscons.get_abi3_tag()`

0.20.0

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- Changes to allow multiple wheels with env.Clone(), for `nonstdlib` project
- Add target parameter to WhlFile

0.13.0

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- Generate .tar.gz with zip-friendly post-1980 timestamps. Still need to set
timestamps of zip for .whl instead of having zipfile read them from the
filesystem.

0.10.0

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- Remove dependency on wheel reference implementation (upstream is removing
its API)

Links

• PyPI: https://pypi.org/project/enscons
• Changelog: https://data.safetycli.com/changelogs/enscons/
• Repo: https://github.com/dholth/enscons