Update mypy requirement from ^0.770 to ^0.780

Updates the requirements on [mypy](https://github.com/python/mypy) to permit the latest version.
- [Release notes](https://github.com/python/mypy/releases)
- [Commits](https://github.com/python/mypy/compare/v0.770...v0.780)

Signed-off-by: dependabot[bot] <support@github.com>

diff --git a/pyproject.toml b/pyproject.toml
index ea0626d4617d470846093686c917f3da4cb9c517..5201c426bc6feeafd2e54eca264c1571565cfac0 100644 (file)
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -19,7 +19,7 @@ curio = {version="^1.2", optional=true}
 sniffio = {version="^1.1", optional=true}
 
 [tool.poetry.dev-dependencies]
-mypy = "^0.770"
+mypy = "^0.780"
 pytest = "^5.4.1"
 flake8 = "^3.7.9"
 sphinx = "^3.0.0"