upgrade flashinfer 0.2.3 (#4317)

Co-authored-by:  qingquansong <qsong@linkedin.com>

python/pyproject.toml

@@ -45,7 +45,7 @@ runtime_common = [
 srt = [
     "sglang[runtime_common]",
     "sgl-kernel==0.0.4.post2",
-    "flashinfer_python==0.2.2.post1",
+    "flashinfer_python==0.2.3",
     "torch==2.5.1",
     "vllm>=0.6.4.post1,<=0.7.2",
     "cuda-python",

python/sglang/srt/entrypoints/engine.py

@@ -376,7 +376,7 @@ def _set_envs_and_config(server_args: ServerArgs):
     if server_args.attention_backend == "flashinfer":
         assert_pkg_version(
             "flashinfer_python",
-            "0.2.2.post1",
+            "0.2.3",
             "Please uninstall the old version and "
             "reinstall the latest version by following the instructions "
             "at https://docs.flashinfer.ai/installation.html.",