Update mypy from 0.720 to 0.730
@@ -11,7 +11,7 @@ psycopg2-binary==2.8.3 # https://github.com/psycopg/psycopg2
# Testing
# ------------------------------------------------------------------------------
-mypy==0.720 # https://github.com/python/mypy
+mypy==0.730 # https://github.com/python/mypy
pytest==5.1.3 # https://github.com/pytest-dev/pytest
pytest-sugar==0.9.2 # https://github.com/Frozenball/pytest-sugar
