Update pythonpackage.yml

Author: tonybaloney

.github/workflows/pythonpackage.yml

@@ -20,7 +20,7 @@ jobs:
  - name: Install dependencies
  run: |
  python -m pip install --upgrade pip
- pip install msrest
+ pip install "msrest>=0.6.0,<0.7.0"
  - name: Python compile
  run: |
  python -m compileall .