Bump waitress from 1.4.3 to 1.4.4

[dependabot-preview]

Bumps waitress from 1.4.3 to 1.4.4.

Changelog

Sourced from waitress's changelog.

1.4.4 (2020-06-01)

• Fix an issue with keep-alive connections in which memory usage was higher than expected because output buffers were being reused across requests on a long-lived connection and each buffer would not be freed until it was full or the connection was closed. Buffers are now rotated per-request to stabilize their behavior.

  See Pylons/waitress#300

• Waitress threads have been updated to contain their thread number. This will allow loggers that use that information to print the thread that the log is coming from.

  See Pylons/waitress#302

Commits

• 743844b Prep 1.4.4
• 1a4d1a9 Merge pull request #302 from Pylons/fix/thread_name
• 7a03297 Update CHANGES.txt
• bebdaf5 Update thread name to contain thread number
• 51f411a Merge pull request #300 from Pylons/fix-265
• a15c7f0 add changelog for #300
• 561735b stabilize buffer behavior with multiple requests on the same connection
• d9384f4 Merge pull request #293 from Pylons/update-configs
• a1ece4d Depend on py27,py38 in coverage
• 42bdacd coverage env does not need project installed
• Additional commits viewable in compare view

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