chore(deps): update dependency ty to v0.0.49

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
ty (changelog)	==0.0.48 → ==0.0.49

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Release Notes

astral-sh/ty (ty)

v0.0.49

Compare Source

Released on 2026-06-11.

Bug fixes

• Fix site-package error when multiple versions of Python are installed in system path (#​25769)

Diagnostics

• Point at attribute's binding site in `invalid-await diagnostic (#​24628)
• Report redefined legacy TypeVars (#​25854)

Performance

• Add dedicated TDDs for narrowing constraints (#​25834)
• Avoid caching same-file raw signatures (#​25761)
• Cache reachability evaluations during inference (#​25696)
• Compact retained definition maps (#​25737)
• Omit redundant definition inference owner keys (#​25837)

Core type checking

• Preserve nominal type of enum.property instances (#​25849)
• Restrict length narrowing to types that encode their length (#​25840)
• Use peer context for collection literals (#​25848)

Contributors

• @​charliermarsh
• @​anishgirianish
• @​cheparity
• @​carljm

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