Update python-package-conda.yml

.github/workflows/python-package-conda.yml

@@ -20,7 +20,7 @@ jobs:
         python-version: '3.10'
     - name: Install dependencies
       run: |
-        pip install requirements.txt
+        pip install -r requirements.txt
     - name: Lint with flake8
       run: |
         conda install flake8