[Hardware][AWS] update neuron to 2.20 (#8676)

Signed-off-by: omrishiv <327609+omrishiv@users.noreply.github.com>

Dockerfile.neuron

 # default base image
-ARG BASE_IMAGE="public.ecr.aws/neuron/pytorch-inference-neuronx:2.1.2-neuronx-py310-sdk2.19.1-ubuntu20.04"
+ARG BASE_IMAGE="public.ecr.aws/neuron/pytorch-inference-neuronx:2.1.2-neuronx-py310-sdk2.20.0-ubuntu20.04"
 
 FROM $BASE_IMAGE
 
@@ -20,7 +20,7 @@ RUN python3 -m pip install --upgrade pip
 RUN python3 -m pip install --no-cache-dir fastapi ninja tokenizers pandas
 RUN python3 -m pip install sentencepiece transformers==4.36.2 -U
 RUN python3 -m pip install transformers-neuronx --extra-index-url=https://pip.repos.neuron.amazonaws.com -U
-RUN python3 -m pip install --pre neuronx-cc==2.12.* --extra-index-url=https://pip.repos.neuron.amazonaws.com -U
+RUN python3 -m pip install --pre neuronx-cc==2.15.* --extra-index-url=https://pip.repos.neuron.amazonaws.com -U
 
 COPY ./vllm /app/vllm/vllm
 COPY ./setup.py /app/vllm/setup.py

requirements-neuron.txt

@@ -2,6 +2,6 @@
 -r requirements-common.txt
 
 # Dependencies for Neuron devices
-transformers-neuronx >= 0.9.0
-torch-neuronx >= 2.1.0
+transformers-neuronx >= 0.12.0
+torch-neuronx >= 2.1.2
 neuronx-cc