[Feature][Build] Upgrade the minimum version to 3.10 (#3926)

### What this PR does / why we need it?

Closes #3728, #3657. 

The main branch is now aligned with the vllm `releases/v0.11.1` branch,
which no longer supports `Python 3.9`. Check it
[here](https://github.com/vllm-project/vllm/blob/releases/v0.11.1/pyproject.toml).

### Does this PR introduce _any_ user-facing change?

The newest version of vllm-ascend don't support Python 3.9. 

### How was this patch tested?

- vLLM version: v0.11.0
- vLLM main:
83f478bb19

Signed-off-by: gcanlin <canlinguosdu@gmail.com>

setup.py

@@ -373,7 +373,6 @@ setup(
     },
     # TODO: Add 3.12 back when torch-npu support 3.12
     classifiers=[
-        "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
         "License :: OSI Approved :: Apache Software License",
@@ -384,7 +383,7 @@ setup(
         "Topic :: Scientific/Engineering :: Information Analysis",
     ],
     packages=find_packages(exclude=("docs", "examples", "tests*", "csrc")),
-    python_requires=">=3.9",
+    python_requires=">=3.10",
     install_requires=get_requirements(),
     ext_modules=ext_modules,
     cmdclass=cmdclass,