Run tests on different OS

.github/workflows/tests.yml

@@ -14,6 +14,10 @@ jobs:
     strategy:
       max-parallel: 4
       matrix:
+        os:
+          - ubuntu-latest
+          - macos-latest
+          - windows-latest
         python-version:
           - 3.7
           - 3.8
@@ -30,13 +34,12 @@ jobs:
         run: |
           python -m pip install --upgrade pip poetry==1.0
           poetry install
-          mkdir -p reports
 
       - name: Lint code
         run: |
-          make flake8
-          make mypy
+          poetry run flake8 aiogram test
+          poetry run mypy aiogram tests
 
       - name: Run tests
         run: |
-          make test-coverage
+          poetry run pytest