Update pyproject.toml - incremented version to 2.9.3cp1

This is a forked version of 2.9.3, so keeping the main version number is useful

Release 4.0.3

Release version 3.7.4

Release v4.0.2

Release v4.0.1

version v3.7.3

Release v3.7.2

Release v4.0.0

Version 3.7.0 release