chore(deps): update dependency multidict to v6 - autoclosed

This MR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
multidict	==5.2.0 -> ==6.0.2

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Release Notes

aio-libs/multidict

v6.0.2

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Bugfixes

• Revert :issue:644, restore type annotations to as-of 5.2.0 version. (:issue:688)

v6.0.1

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Bugfixes

• Restored back MultiDict, CIMultiDict, MultiDictProxy, and CIMutiDictProxy generic type arguments; they are parameterized by value type, but the key type is fixed by container class.

  MultiDict[int] means MutableMultiMapping[str, int]. The key type of MultiDict is always str, while all str-like keys are accepted by API and converted to str internally.

  The same is true for CIMultiDict[int] which means MutableMultiMapping[istr, int]. str-like keys are accepted but converted to istr internally. (:issue:682)

v6.0.0

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Features

• Use METH_FASTCALL where it makes sense.

  MultiDict.add() is 2.2 times faster now, CIMultiDict.add() is 1.5 times faster. The same boost is applied to get*(), setdefault(), and pop*() methods. (:issue:681)

Bugfixes

• Fixed type annotations for keys of multidict mapping classes. (:issue:644)
• Support Multidict[int] for pure-python version. __class_getitem__ is already provided by C Extension, making it work with the pure-extension too. (:issue:678)

Deprecations and Removals

• Dropped Python 3.6 support (:issue:680)

Misc

• :issue:659

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