Update pip-chill to 1.0.3

[pyup-bot]

This PR updates pip-chill from 1.0.0 to 1.0.3.

Changelog

1.0.2

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* Sort dependencies alphabetically in --verbose
* Use `ssort` to topologically sort code
* Update 3.11-dev to 3.11 on TravisCI
* Remove support for Python 3.5 and 3.6
* Update README.rst with --no-chill switch
* Bump version to 1.0.2

1.0.1

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* Add `no-chill` option so that pip-chill is not shown as installed
* Do Linux tests on Focal where possible (2.7 and 3.7 on ppc64le and s390x, 2.7 on arm64 run Bionic)
* Fix wrong URLs in CONTRIBUTING.rst
* Add 3.7, 3.8, 3.9 to ppc64le and s390x, 3.10-dev to Linux, macOS
* Rename nightly as 3.10-dev
* Add explicit amd64 arch to amd64
* Fix failing flake8 test
* Bump version to 1.0.1

Links

• PyPI: https://pypi.org/project/pip-chill
• Changelog: https://pyup.io/changelogs/pip-chill/
• Repo: https://github.com/rbanffy/pip-chill