Bump typing-extensions from 4.5.0 to 4.6.3 in /backend

[dependabot]

Bumps typing-extensions from 4.5.0 to 4.6.3.

Changelog

Sourced from typing-extensions's changelog.

Release 4.6.3 (June 1, 2023)

• Fix a regression introduced in v4.6.0 in the implementation of runtime-checkable protocols. The regression meant that doing class Foo(X, typing_extensions.Protocol), where X was a class that had abc.ABCMeta as its metaclass, would then cause subsequent isinstance(1, X) calls to erroneously raise TypeError. Patch by Alex Waygood (backporting the CPython PR python/cpython#105152).
• Sync the repository's LICENSE file with that of CPython. typing_extensions is distributed under the same license as CPython itself.
• Skip a problematic test on Python 3.12.0b1. The test fails on 3.12.0b1 due to a bug in CPython, which will be fixed in 3.12.0b2. The typing_extensions test suite now passes on 3.12.0b1.

Release 4.6.2 (May 25, 2023)

• Fix use of @deprecated on classes with __new__ but no __init__. Patch by Jelle Zijlstra.
• Fix regression in version 4.6.1 where comparing a generic class against a runtime-checkable protocol using isinstance() would cause AttributeError to be raised if using Python 3.7.

Release 4.6.1 (May 23, 2023)

• Change deprecated @runtime to formal API @runtime_checkable in the error message. Patch by Xuehai Pan.
• Fix regression in 4.6.0 where attempting to define a Protocol that was generic over a ParamSpec or a TypeVarTuple would cause TypeError to be raised. Patch by Alex Waygood.

Release 4.6.0 (May 22, 2023)

• typing_extensions is now documented at https://typing-extensions.readthedocs.io/en/latest/. Patch by Jelle Zijlstra.

• Add typing_extensions.Buffer, a marker class for buffer types, as proposed by PEP 688. Equivalent to collections.abc.Buffer in Python 3.12. Patch by Jelle Zijlstra.

• Backport two CPython PRs fixing various issues with typing.Literal: python/cpython#23294 and python/cpython#23383. Both CPython PRs were originally by Yurii Karabas, and both were backported to Python >=3.9.1, but no earlier. Patch by Alex Waygood.

  A side effect of one of the changes is that equality comparisons of Literal objects will now raise a TypeError if one of the Literal objects being compared has a mutable parameter. (Using mutable parameters with Literal is not supported by PEP 586 or by any major static type checkers.)

• Literal is now reimplemented on all Python versions <= 3.10.0. The

... (truncated)

Commits

• c57333b Update version to 4.6.3
• 22c0e70 Backport CPython PR 105152 (#208)
• b8a2ece Third-party tests: cattrs has switched to pdm (#209)
• b0be88c Add a cron job for testing third-party users of typing_extensions (#206)
• 32887d3 Sync LICENSE with CPython (#205)
• 252a4a4 Add more detailed versioning policy (#197)
• 3c630b9 Backport some new protocol tests from CPython (#202)
• 06f7360 Minor improvements to CI workflows (#201)
• 5d51455 Skip a problematic test on CPython 3.12.0b1 (#200)
• e84f909 Prepare release 4.6.2 (#195)
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[github-actions]

Test Results

204 tests   204 ✔️  9s ⏱️
    1 suites      0 💤
    1 files        0 ❌

Results for commit bd728f9.

[dependabot]

Superseded by #637.