[Security] Bump twisted from 18.7.0 to 19.7.0

[dependabot-preview]

Bumps twisted from 18.7.0 to 19.7.0. This update includes security fixes.

Vulnerabilities fixed

Sourced from The GitHub Security Advisory Database.

High severity vulnerability that affects twisted
In words.protocols.jabber.xmlstream in Twisted through 19.2.1, XMPP support did not verify certificates when used with TLS, allowing an attacker to MITM connections.

Affected versions: < 19.7.0

Sourced from The GitHub Security Advisory Database.

Moderate severity vulnerability that affects twisted
In Twisted before 19.2.1, twisted.web did not validate or sanitize URIs or HTTP methods, allowing an attacker to inject invalid characters such as CRLF.

Affected versions: < 19.2.1

Changelog

Sourced from twisted's changelog.

Twisted 19.7.0 (2019-07-28)

Features

• The callable argument to twisted.internet.task.deferLater() is no longer required. (#9577)
• Twisted's minimum Cryptography requirement is now 2.5. (#9592)
• twisted.internet.utils.getProcessOutputAndValue now accepts stdinBytes to write to the child process's standard input. (#9607)
• Add new twisted.logger.capturedLogs context manager for capturing observed log events in tests. (#9617)
• twisted.internet.base.PluggableResolverMixin, which implements the pluggable resolver interfaces for easier re-use in other reactors, has been factored out of ReactorBase. (#9632)
• The PyPI page for Twisted has been enhanced to include more information and useful links. (#9648)

Bugfixes

• twisted.internet.endpoints is now importable on Windows when pywin32 is not installed. (#6032)
• twisted.conch.ssh now generates correct keys when using hmac-sha2-512 with SHA1 based KEX algorithms. (#8258)
• twisted.internet.iocpreactor.abstract.FileHandle no longer duplicates/looses outgoing data when .write() is called in rapid succession with large payloads (#9446)
• twisted.application.backoffPolicy will not fail on connection attempts > 1750 with default settings. (#9476)
• Trial on Python 3 will now properly re-raise ImportErrors that occur during the import of a module, rather than saying the module doesn't exist. (#9628)
• twisted.internet.process does not fail on import when the process has more than 1024 file descriptors opened. (#9636)
• Add the stackLevel keyword argument to twisted.logger.STDLibLogObserver._findCaller to fix an incompatibility with Python 3.8. (#9668)

Improved Documentation

• Fix the incorrect docstring for twisted.python.components.Componentized.addComponent which stated that the function returned a list of interfaces, even though the function doesn't actually do so. (#9637)

Deprecations and Removals

• twisted.test.proto_helpers has moved to twisted.internet.testing. twisted.test.proto_helpers has been deprecated. (#6435)
• twisted.protocols.mice, deprecated since Twisted 16.0, has been removed. (#9602)
• twisted.conch.insults.client and twisted.conch.insults.colors, deprecated since Twisted 10.1, have been removed. (#9603)
• The __version__ attribute of Twisted submodules that were previously packaged separately, deprecated since Twisted 16.0, has been removed. (#9604)
• Python 3.4 is no longer supported. (#9613)
• twisted.python.compat.OrderedDict, an alias for collections.OrderedDict and deprecated since Twisted 15.5, has been removed. (#9639)

Misc

• #9217, #9445, #9454, #9605, #9614, #9615, #9619, #9625, #9633, #9640, #9674

Conch

Bugfixes

• t.c.ssh.connection.SSHConnection now fails channels that are in the process of opening when the connection is lost. (#2782)

... (truncated)

Commits

• f2ff3f9 Fix something Incremental missed
• 04d865d Towncrier for 19.7.0
• 0f3e8cd Incremental to 19.7.0
• 4d61c62 Move some miscategorised newsfragments
• 7d88fca Revert "towncrier for 19.7.0rc1"
• 17084ea towncrier for 19.7.0rc1
• 6e8cb44 incremental to 19.7.0
• ab6156f Merge pull request #1143 from twisted/9628-trial3-importerror
• e0b696f Merge branch 'trunk' into 9628-trial3-importerror
• 5b203b2 Merge ryban:8258-ryban-hmac-sha2-512-fix: Fix SSH not generating correct keys...
• Additional commits viewable in compare view

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