[Security] Bump waitress from 0.8.10 to 1.3.1

[dependabot-preview]

Bumps waitress from 0.8.10 to 1.3.1.

Release notes

Sourced from waitress's releases.

v1.3.1

No release notes provided.

v1.3.0

No release notes provided.

v1.3.0b0

No release notes provided.

v1.2.1

No release notes provided.

v1.2.0

No release notes provided.

v1.1.0

https://pypi.org/project/waitress/1.1.0/

v1.0.2

No release notes provided.

v1.0.1

No release notes provided.

v1.0.0

No release notes provided.

v1.0a2

No release notes provided.

v1.0a1

No release notes provided.

v0.9.0

No release notes provided.

v0.9.0b1

No release notes provided.

0.9.0b0

No release notes provided.

0.8.11b0

No release notes provided.

Changelog

Sourced from waitress's changelog.

1.2.1 (2019-01-25)

Bugfixes

- When given an IPv6 address in ``X-Forwarded-For`` or ``Forwarded for=``
  waitress was placing the IP address in ``REMOTE_ADDR`` with brackets:
  ``[2001:db8::0]``, this does not match the requirements in the CGI spec which
  ``REMOTE_ADDR`` was lifted from. Waitress will now place the bare IPv6
  address in ``REMOTE_ADDR``: ``2001:db8::0``. See
  [#232](https://github-redirect.dependabot.com/Pylons/waitress/pull/232) and
  [#230](https://github-redirect.dependabot.com/Pylons/waitress/issues/230)

1.2.0 (2019-01-15)
------------------

No changes since the last beta release. Enjoy Waitress!

1.2.0b3 (2019-01-07)
--------------------

Bugfixes

• Modified clear_untrusted_proxy_headers to be usable without a
  trusted_proxy.
  #228

• Modified trusted_proxy_count to error when used without a
  trusted_proxy.
  #228

1.2.0b2 (2019-02-02)

Bugfixes

- Fixed logic to no longer warn on writes where the output is required to have
  a body but there may not be any data to be written. Solves issue posted on
  the Pylons Project mailing list with 1.2.0b1.

1.2.0b1 (2018-12-31)
--------------------

Happy New Year!

Features

... (truncated)

Commits

• 05e965e Prep for 1.3.1
• e247c93 Merge pull request #261 from Pylons/bugfix/uri_parsing
• 2bd372a Add CHANGES.txt entry for bug
• e9a2de7 Add comment why this code exists
• 881fc2b Allow requests with URI that starts with multiple slashes
• e882325 Add failing tests for #260
• 94e2311 Merge pull request #259 from Pylons/proxy-header-middleware
• 0667b8e restore the old per-language coverage files
• a58c888 add proxy header tests
• 9cf9466 support echoing more request info, not just body, in functional tests
• Additional commits viewable in compare view

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[dependabot-preview]

We've just been alerted that this update fixes a security vulnerability:

Sourced from The GitHub Security Advisory Database.

Critical severity vulnerability that affects waitress

Impact

Waitress would header fold a double Content-Length header and due to being unable to cast the now comma separated value to an integer would set the Content-Length to 0 internally.

So a request with:

Content-Length: 10
Content-Length: 10

... (truncated)

Affected versions: ["< 1.3.1"]

[dependabot-preview]

Superseded by #54.