Update python-publish.yml

Author: lachlangrose

.github/workflows/python-publish.yml

@@ -21,6 +21,7 @@ jobs:
         python-version: '3.x'
     - name: Install dependencies
       run: |
+        pip install -r requirements.txt
         python -m pip install --upgrade pip
         pip install setuptools wheel twine
     - name: Build and publish