CLI Minimum Python Version Update

With the v0.90.0 release of the CLI (scheduled for May 24, 2024), Python 3.7 will no longer be supported due to the the version EOL. You can continue to use Python 3.7 on older versions of the CLI, but going forward, Python 3.8 will be the minimum required version.

Note that, as part of this release, support for Python 3.12 was also added!