⬆️🐍 Update dependency ty to v0.0.21

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
ty (changelog)	==0.0.20 → ==0.0.21

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Release Notes

astral-sh/ty (ty)

v0.0.21

Compare Source

Released on 2026-03-05.

Bug fixes

• Avoid stack overflow with recursive typevar (#​23652)
• Fix panic on incomplete except handlers (#​23708)
• Allow unions of different-length iterables in *args unpacking into optional positional parameters (#​23124)
• Don't replace Any attributes with object after isinstance narrowing (#​23725)

LSP server

• Exclude decorators from class/def code folding (#​23543)
• Fix handling of non-Python text documents (#​23704)

Configuration

• Add all selector to ty.json schema (#​23721)
• Fix precedence of all selector in TOML configurations (#​23723)
• Make all selector case-sensitive (#​23713)

Type checking

• Add invalid-enum-member-annotation lint rule (#​23648)
• Add a diagnostic for an unused awaitable (#​23650)
• Add a diagnostic if a TypeVar is used to specialize a ParamSpec, or vice versa (#​23738)
• Add more type-variable default validation (#​23639)
• Add unbound type variable detection in annotations (#​23641)
• Apply narrowing to walrus values (#​23687)
• Do not union Unknown into unannotated container types (#​23718)
• Avoid inferring generics with negative intersections (#​23750)
• More precise types for name and value of an enum (#​23683)
• Better preserve user-provided union order in inferred specializations (#​23715)
• Support narrowing in ternary expressions (#​23726)
• Validate bare ParamSpec usage in type annotations, and support stringified ParamSpecs as the first argument to Callable (#​23625)

Contributors

• @​charliermarsh
• @​zsol
• @​Gankra
• @​MichaReiser
• @​AlexWaygood
• @​rizzip
• @​iksuddle
• @​dcreager
• @​BurntSushi
• @​carljm
• @​oconnor663

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