Bump xgrammar from 0.1.27 to 0.1.32 in /python

Bumps [xgrammar](https://github.com/mlc-ai/xgrammar) from 0.1.27 to 0.1.32.
- [Release notes](https://github.com/mlc-ai/xgrammar/releases)
- [Commits](mlc-ai/xgrammar@v0.1.27...v0.1.32)

---
updated-dependencies:
- dependency-name: xgrammar
  dependency-version: 0.1.32
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

python/pyproject.toml

@@ -73,7 +73,7 @@ dependencies = [
   "transformers==4.57.1",
   "uvicorn",
   "uvloop",
-  "xgrammar==0.1.27",
+  "xgrammar==0.1.32",
 
   "smg-grpc-proto>=0.3.3",
   "grpcio>=1.78.0",