chore(deps): update dependency ty to v0.0.73

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
ty (changelog)	==0.0.72 → ==0.0.73

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Release Notes

astral-sh/ty (ty)

v0.0.73

Compare Source

Released on 2026-08-18.

LSP server

• Do not prefer unsafe fixes in the language server (#​27822)
• Fix signature help in trailing whitespace (#​27784)

Library support

• Preserve variadic generics in functools.partial (#​27774)

Diagnostics

• Add an opt-in rule flagging function decorators that transform a non-dynamic type into a dynamic type (#​27829)
• Disambiguate same-named types in several diagnostics (#​27814)
• Show error spans for errors originating in script metadata (#​26693)

Core type checking

• Avoid bypassing solver during literal promotion (#​27763)
• Expand nested union aliases when finding a TypedDict or callable (#​27740)
• Implement intersection meta-type projection (#​27660)
• Infer generic protocols from class objects (#​27812)
• Model exception-suppressing context managers (#​27219)
• Preserve TypeAliasType runtime origin (#​27813)
• Preserve class objects in lazy protocol checks (#​27815)
• Preserve declared types in exception handlers (#​27817)
• Preserve explicit globals after conditional rebinding (#​27786)
• Preserve property subclass types and accessors (#​27833)
• Preserve required stub fields in generated constructors (#​27765)
• Preserve static upper bounds of gradual solutions (#​27664)
• Prevent unrelated quantified constraints from destabilizing recursive queries (#​27737)
• Separate generic constraint accumulation from legacy projection (#​27743)
• Simplify generic protocol inference (#​27819)
• Specialize inherited members of unspecialized generic classes (#​27658)
• Specialize type variables determined by bound receivers (#​27732)
• Support unpacking tuple type aliases (#​27825)
• Sync vendored typeshed stubs (#​27771). Typeshed diff

Performance

• Cache py.typed contents (#​27805)
• Deduplicate exception checkpoints across equivalent branches (#​27703)

Contributors

• @​charliermarsh
• @​AlexWaygood
• @​MichaReiser
• @​augustelalande
• @​carljm
• @​woodruffw
• @​dhruvmanila
• @​ibraheemdev
• @​zaniebot

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📚 Documentation preview 📚: https://objctypes--688.org.readthedocs.build/en/688/