[ty] Use 3.14 as the default version

[sharkdp]

Summary

Bump the latest supported Python version of ty to 3.14 and updates some references from 3.13 to 3.14.

This also fixes a bug with dataclasses.field on 3.14 (which adds a new keyword-only parameter to that function, breaking our previously naive matching on the parameter structure of that function).

Test Plan

A ty check on a file with template strings (without any further configuration) doesn't raise errors anymore.

[github-actions]

mypy_primer results

No ecosystem changes detected ✅
No memory usage changes detected ✅

[github-actions]

Diagnostic diff on typing conformance tests

Changes were detected when running ty on typing conformance tests

--- old-output.txt	2025-10-08 09:29:07.256383703 +0000
+++ new-output.txt	2025-10-08 09:29:10.537406870 +0000
@@ -1,6 +1,6 @@
 WARN ty is pre-release software and not ready for production use. Expect to encounter bugs, missing features, and fatal errors.
 fatal[panic] Panicked at /home/runner/.cargo/git/checkouts/salsa-e6f3bb7c2a062968/29ab321/src/function/execute.rs:217:25 when checking `/home/runner/work/ruff/ruff/typing/conformance/tests/aliases_type_statement.py`: `PEP695TypeAliasType < 'db >::value_type_(Id(cc17)): execute: too many cycle iterations`
-fatal[panic] Panicked at /home/runner/.cargo/git/checkouts/salsa-e6f3bb7c2a062968/29ab321/src/function/execute.rs:217:25 when checking `/home/runner/work/ruff/ruff/typing/conformance/tests/aliases_typealiastype.py`: `infer_definition_types(Id(16432)): execute: too many cycle iterations`
+fatal[panic] Panicked at /home/runner/.cargo/git/checkouts/salsa-e6f3bb7c2a062968/29ab321/src/function/execute.rs:217:25 when checking `/home/runner/work/ruff/ruff/typing/conformance/tests/aliases_typealiastype.py`: `infer_definition_types(Id(1643f)): execute: too many cycle iterations`
 _directives_deprecated_library.py:15:31: error[invalid-return-type] Function always implicitly returns `None`, which is not assignable to return type `int`
 _directives_deprecated_library.py:30:26: error[invalid-return-type] Function always implicitly returns `None`, which is not assignable to return type `str`
 _directives_deprecated_library.py:36:41: error[invalid-return-type] Function always implicitly returns `None`, which is not assignable to return type `Self@__add__`
@@ -743,6 +743,8 @@
 protocols_subtyping.py:38:5: error[invalid-assignment] Object of type `Proto2` is not assignable to `Concrete2`
 protocols_subtyping.py:55:5: error[invalid-assignment] Object of type `Proto2` is not assignable to `Proto3`
 protocols_variance.py:85:62: error[invalid-return-type] Function always implicitly returns `None`, which is not assignable to return type `R@__call__`
+qualifiers_annotated.py:36:42: error[invalid-syntax] named expression cannot be used within a type annotation
+qualifiers_annotated.py:40:28: error[invalid-syntax] await expression cannot be used within a type annotation
 qualifiers_annotated.py:43:17: error[invalid-type-form] List literals are not allowed in this context in a type expression: Did you mean `tuple[int, str]`?
 qualifiers_annotated.py:44:17: error[invalid-type-form] Tuple literals are not allowed in this context in a type expression
 qualifiers_annotated.py:44:18: error[invalid-type-form] Tuple literals are not allowed in this context in a type expression: Did you mean `tuple[int, str]`?
@@ -856,5 +858,5 @@
 typeddicts_usage.py:28:17: error[missing-typed-dict-key] Missing required key 'name' in TypedDict `Movie` constructor
 typeddicts_usage.py:28:18: error[invalid-key] Invalid key access on TypedDict `Movie`: Unknown key "title"
 typeddicts_usage.py:40:24: error[invalid-type-form] The special form `typing.TypedDict` is not allowed in type expressions. Did you mean to use a concrete TypedDict or `collections.abc.Mapping[str, object]` instead?
-Found 857 diagnostics
+Found 859 diagnostics
 WARN A fatal error occurred while checking some files. Not all project files were analyzed. See the diagnostics list above for details.

[sharkdp]

+qualifiers_annotated.py:36:42: error[invalid-syntax] named expression cannot be used within a type annotation
+qualifiers_annotated.py:40:28: error[invalid-syntax] await expression cannot be used within a type annotation

These are syntax errors now. I'll open a PR upstream (Edit: python/typing#2093).

[github-actions]

ruff-ecosystem results

Linter (stable)

✅ ecosystem check detected no linter changes.

Linter (preview)

✅ ecosystem check detected no linter changes.

Formatter (stable)

✅ ecosystem check detected no format changes.

Formatter (preview)

✅ ecosystem check detected no format changes.