BENCH Bump cython to 3.0.3 for asv benchmarks (scikit-learn#27541)

Author: jeremiedbb

asv_benchmarks/asv.conf.json

@@ -78,7 +78,7 @@
     "matrix": {
         "numpy": ["1.25.2"],
         "scipy": ["1.11.2"],
-        "cython": ["3.0.2"],
+        "cython": ["3.0.3"],
         "joblib": ["1.3.2"],
         "threadpoolctl": ["3.2.0"],
         "pandas": ["2.1.0"]