Bump zope-interface from 5.3.0 to 5.4.0

[dependabot-preview]

Bumps zope-interface from 5.3.0 to 5.4.0.

Changelog

Sourced from zope-interface's changelog.

5.4.0 (2021-04-15)

• Make the C implementation of the __providedBy__ descriptor stop ignoring all errors raised when accessing the instance's __provides__. Now it behaves like the Python version and only catches AttributeError. The previous behaviour could lead to crashing the interpreter in cases of recursion and errors. See issue 239.
• Update the repr() and str() of various objects to be shorter and more informative. In many cases, the repr() is now something that can be evaluated to produce an equal object. For example, what was previously printed as <implementedBy builtins.list> is now shown as classImplements(list, IMutableSequence, IIterable). See issue 236.
• Make Declaration.__add__ (as in implementedBy(Cls) + ISomething) try harder to preserve a consistent resolution order when the two arguments share overlapping pieces of the interface inheritance hierarchy. Previously, the right hand side was always put at the end of the resolution order, which could easily produce invalid orders. See issue 193.

Commits

• 324ba68 Preparing release 5.4.0
• 24b6a01 Merge pull request #240 from zopefoundation/issue239
• 6a293da Finish sentence in docstring. [skip ci]
• 253456f Merge pull request #238 from zopefoundation/issue193
• 8a0a8f1 Make C's providedBy stop ignoring all errors and catch only AttributeError.
• eb542a8 Make Declaration.add try harder to produce consistent resolution orders.
• 4a686fc Merge pull request #237 from zopefoundation/issue236
• ce8f66f Update repr() and str() of some common objects.
• See full diff in compare view

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[leplatrem]

@dependabot rebase