This PR resolves a severe dependency resolution issue for projects that use Poetry and claim to support Python >=3.x, which is incompatible with the python = "^3.10" dependency specified in this project.

Poetry's non-standard ^3.10 syntax resolves to >=3.10,<4.0, and Poetry will fail to resolve this library as a dependency with this error message:

The current project's supported Python range (>=3.10) is not compatible
with some of the required packages Python requirement:
  - legacy-cgi requires Python <4.0,>=3.10, so it will not be satisfied for Python >=4.0

Thanks for reviewing this, and have a great holiday!