[Feature]: update the TRT-llm bench hard code version to match the TRT-llm version.

[pst2154]

🚀 The feature, motivation and pitch

https://github.com/NVIDIA/TensorRT-LLM/blob/main/tensorrt_llm/bench/benchmark/utils/general.py#L172

is hardcoded as 1.2 so TRT-llm bench says version 1.2 no matter what.
TensorRT LLM Version: 1.2 Dtype: bfloat16 KV Cache Dtype: FP8 Quantization: NVFP4

Alternatives

match the TRT-llm version

Additional context

No response

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