Fix CI (#914)

.github/workflows/main.yaml

@@ -55,15 +55,14 @@ jobs:
     strategy:
       matrix:
         python-version: [ '3.8', '3.9', '3.10', '3.11'  ]
-        platform: [ubuntu-latest, macOS-latest, windows-latest]
+        platform: [ubuntu-latest, macos-13, windows-2019]
     runs-on: ${{ matrix.platform }}
     steps:
       - uses: actions/checkout@v2
       - name: Setup python
         uses: actions/setup-python@v1
         with:
           python-version: ${{ matrix.python-version }}
-          architecture: x64
 
       - name: Install Poetry
         uses: snok/install-poetry@v1
@@ -78,23 +77,23 @@ jobs:
         with:
           path: .venv
           key: venv-${{ matrix.python-version }}-${{ runner.os }}-${{ hashFiles('**/poetry.lock') }}
-        if: ${{ matrix.platform != 'windows-latest' }}  # windows hangs if using a cached venv
+        if: ${{ matrix.platform != 'windows-2019' }}  # windows hangs if using a cached venv
 
       - name: Install Dependencies
         run: poetry install
         if: steps.cached-poetry-dependencies.outputs.cache-hit != 'true'
 
       - name: Run pytest
         run: make pytest
-        if: ${{ matrix.platform != 'windows-latest' }}
+        if: ${{ matrix.platform != 'windows-2019' }}
 
       - name: Run pytest
         run: poetry run pytest --cov=nornir --cov-report=term-missing
-        if: ${{ matrix.platform == 'windows-latest' }}
+        if: ${{ matrix.platform == 'windows-2019' }}
 
       - name: Run nbval
         run: make nbval
-        if: ${{ matrix.platform != 'windows-latest' }}
+        if: ${{ matrix.platform != 'windows-2019' }}
 
 #  release:
 #    name: Releasing to pypi