[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>

README.zh.md

@@ -42,7 +42,7 @@ vLLM 昇腾插件 (`vllm-ascend`) 是一个由社区维护的让vLLM在Ascend NP
 - 硬件：Atlas 800I A2 Inference系列、Atlas A2 Training系列、Atlas 800I A3 Inference系列、Atlas A3 Training系列、Atlas 300I Duo（实验性支持）
 - 操作系统：Linux
 - 软件：
-  * Python >= 3.9, < 3.12
+  * Python >= 3.10, < 3.12
   * CANN >= 8.3.rc1 (Ascend HDK 版本参考[这里](https://www.hiascend.com/document/detail/zh/canncommercial/83RC1/releasenote/releasenote_0000.html))
   * PyTorch == 2.7.1, torch-npu == 2.7.1
   * vLLM (与vllm-ascend版本一致)