Updated files with 'repo_helper'. (#94)

Co-authored-by: repo-helper[bot] <74742576+repo-helper[bot]@users.noreply.github.com>

Author: repo-helper[bot]

.github/workflows/mypy.yml

@@ -42,13 +42,23 @@ jobs:
         with:
           python-version: "3.8"
 
-      - name: Install dependencies 🔧
+      - name: Install dependencies (Linux) 🔧
+        if: ${{ matrix.os == 'ubuntu-20.04' && steps.changes.outputs.code == 'true' }}
         run: |
           python -VV
           python -m site
           python -m pip install --upgrade pip setuptools wheel
           python -m pip install --upgrade tox~=3.0 virtualenv!=20.16.0
 
+      - name: Install dependencies (Windows) 🔧
+        if: ${{ matrix.os != 'ubuntu-20.04' && steps.changes.outputs.code == 'true' }}
+        run: |
+          python -VV
+          python -m site
+          python -m pip install --upgrade pip setuptools wheel
+          python -m pip install --upgrade tox~=3.0 virtualenv!=20.16.0
+          choco install mingw -y
+
       - name: "Run mypy"
         if: steps.changes.outputs.code == 'true'
         run: "python -m tox -e mypy -s false"