Update main.yml

update mypy and see what happens

.github/workflows/main.yml

@@ -41,7 +41,7 @@ jobs:
           pip install --progress-bar off torch==${{ matrix.torch-version }}
           pip install --progress-bar off .[extras]
           if [[ ${{ matrix.torch-version }} == "1.4.0" ]]; then pip install pylint==2.4.4 flake8==3.7.9; fi
-          if [[ ${{ matrix.torch-version }} != "1.0.1" ]]; then pip install mypy==0.761; fi
+          if [[ ${{ matrix.torch-version }} != "1.0.1" ]]; then pip install mypy==0.790; fi
           pip install pytest
           pip install --progress-bar off coverage codecov
       - name: Linting pylint and flake8 if torch version is 1.4.0