try #2: pin hf transformers and accelerate to latest release, don't reinstall pytorch (#867)

* isolate torch from the requirements.txt

* fix typo for removed line ending

* pin transformers and accelerate to latest releases

* try w auto-gptq==0.5.1

* update README to remove manual peft install

* pin xformers to 0.0.22

* bump flash-attn to 2.3.3

* pin flash attn to exact version

.github/workflows/tests.yml

@@ -71,6 +71,7 @@ jobs:
 
       - name: Install dependencies
         run: |
+          pip3 install --extra-index-url https://download.pytorch.org/whl/cu118 -U torch==2.0.1
           pip3 uninstall -y transformers accelerate
           pip3 install -U -e .[flash-attn]
           pip3 install -r requirements-tests.txt