[CI] Install torch 2.3 using index

.github/workflows/publish.yml

@@ -133,9 +133,13 @@ jobs:
             print(max(min(int(env['MATRIX_CUDA_VERSION']), maxv), minv))" \
           )
           if [[ ${{ matrix.torch-version }} == *"dev"* ]]; then
+            if [[ ${MATRIX_TORCH_VERSION} == "2.2" ]]; then
               # --no-deps because we can't install old versions of pytorch-triton
               pip install typing-extensions jinja2
               pip install --no-cache-dir --no-deps --pre https://download.pytorch.org/whl/nightly/cu${TORCH_CUDA_VERSION}/torch-${{ matrix.torch-version }}%2Bcu${TORCH_CUDA_VERSION}-cp${MATRIX_PYTHON_VERSION}-cp${MATRIX_PYTHON_VERSION}-linux_x86_64.whl
+            else
+              pip install --no-cache-dir --pre torch==${{ matrix.torch-version }} --index-url https://download.pytorch.org/whl/nightly/cu${TORCH_CUDA_VERSION}
+            fi
           else
             pip install --no-cache-dir torch==${{ matrix.torch-version }} --index-url https://download.pytorch.org/whl/cu${TORCH_CUDA_VERSION}
           fi

flash_attn/__init__.py

-__version__ = "2.5.1"
+__version__ = "2.5.1.post1"
 
 from flash_attn.flash_attn_interface import (
     flash_attn_func,