### 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>