`pyproject.toml` specifies `mypy = "0.790"` causes `poetry install` to fail

[ajanderson1]

It would appear that specifying mypy = "0.790" in pyproject.toml causes poetry install to fail (due to dependency: typed-ast<=1.5.0)

To Reproduce
Following instruction as per documentation (Mac OS X 13.3.1 (22E261) M1 & Python 3.10)

PR submitted