Support Python 3.14 syntax (#269)

* Add failing test for t-string syntax

* Add support for t-strings

Prior to this, the t-string syntax (added in Python 3.14) would cause a
syntax error.

Author: seddonym

CHANGELOG.rst

@@ -6,6 +6,7 @@ latest
 ------
 
 * Drop support for Python 3.9.
+* Bugfix: don't treat t-strings as syntax errors. https://github.com/python-grimp/grimp/issues/268
 
 3.13 (2025-10-29)
 -----------------

rust/Cargo.lock

@@ -21,9 +21,9 @@ rustc-hash = "2.1.1"
 indexmap = "2.11.0"
 regex = "1.11.2"
 const_format = "0.2.34"
-ruff_python_parser = { git = "https://github.com/astral-sh/ruff.git", tag = "v0.4.10" }
-ruff_python_ast = { git = "https://github.com/astral-sh/ruff.git", tag = "v0.4.10" }
-ruff_source_file = { git = "https://github.com/astral-sh/ruff.git", tag = "v0.4.10" }
+ruff_python_parser = { git = "https://github.com/astral-sh/ruff.git", tag = "0.14.8" }
+ruff_python_ast = { git = "https://github.com/astral-sh/ruff.git", tag = "0.14.8" }
+ruff_source_file = { git = "https://github.com/astral-sh/ruff.git", tag = "0.14.8" }
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0.137"
 serde_yaml = "0.9"