Update release_test_pypi_before_merge.yml

Author: BurkeHulk

.github/workflows/release_test_pypi_before_merge.yml

@@ -16,7 +16,7 @@ jobs:
 
     - uses: actions/setup-python@v2
       with:
-        python-version: '3.8.14'
+        python-version: '3.9.0'
 
     - name: add timestamp to the version
       id: prep-version
@@ -48,7 +48,7 @@ jobs:
       run: |
         # we need to install the requirements.txt first
         # as test-pypi may not contain the distributions for libs listed in the txt file
-        pip install --index-url https://pypi.org/simple --upgrade -r requirements/requirements.txt
+        pip install -r requirements/requirements.txt
         pip install -U setuptools==68.2.2 wheel
         pip install --index-url https://test.pypi.org/simple/ --extra-index-url https://pypi.python.org/pypi colossalai==$VERSION
       env: