Update pip-tools to 6.5.0

[pyup-bot]

This PR updates pip-tools from 6.2.0 to 6.5.0.

Changelog

6.5.0

Features:

- Add support for pip>=22.0, drop support for Python 3.6
([1567](https://github.com/jazzband/pip-tools/pull/1567)). Thanks di
- Test on Python 3.11 ([1527](https://github.com/jazzband/pip-tools/pull/1527)). Thanks
hugovk

Other Changes:

- Minor doc edits ([1445](https://github.com/jazzband/pip-tools/pull/1445)). Thanks
ssiano

6.4.0

Features:

- Add support for `pip>=21.3`
([1501](https://github.com/jazzband/pip-tools/pull/1501)). Thanks atugushev
- Add support for Python 3.10
([1497](https://github.com/jazzband/pip-tools/pull/1497)). Thanks joshuadavidthomas

Other Changes:

- Bump pip minimum version to `>= 21.2`
([1500](https://github.com/jazzband/pip-tools/pull/1500)). Thanks atugushev

6.3.1

Bug Fixes:

- Ensure `pip-tools` unions dependencies of multiple declarations of a package with
different extras ([1486](https://github.com/jazzband/pip-tools/pull/1486)). Thanks
richafrank
- Allow comma-separated arguments for `--extra`
([1493](https://github.com/jazzband/pip-tools/pull/1493)). Thanks AndydeCleyre
- Improve clarity of help text for options supporting multiple
([1492](https://github.com/jazzband/pip-tools/pull/1492)). Thanks AndydeCleyre

6.3.0

Features:

- Enable single-line annotations with `pip-compile --annotation-style=line`
([1477](https://github.com/jazzband/pip-tools/pull/1477)). Thanks AndydeCleyre
- Generate PEP 440 direct reference whenever possible
([1455](https://github.com/jazzband/pip-tools/pull/1455)). Thanks FlorentJeannot
- PEP 440 Direct Reference support
([1392](https://github.com/jazzband/pip-tools/pull/1392)). Thanks FlorentJeannot

Bug Fixes:

- Change log level of hash message
([1460](https://github.com/jazzband/pip-tools/pull/1460)). Thanks plannigan
- Allow passing `--no-upgrade` option
([1438](https://github.com/jazzband/pip-tools/pull/1438)). Thanks ssbarnea

Links

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

[pyup-bot]

Closing this in favor of #440