Update gh actions unit test

[aaraney]

• Add build python matrix. Tests now run on python 3.8, 3.9, 3.10, and 3.11.
• Add step to echo dependency versions. This is useful for debugging purposes.
• Fix TLS certs email todo. Certs now use phony dmod_gh_action@fake.gov email address.

closes #457

[aaraney]

Nice! So we have failures in 3.8 because of the use of list[str] instead of typing.List[str] as a type hint. See #464 for more detail. Opening a PR now to fix this.

[aaraney]

Opened #467 to track a failure due to removal of the ModelExecRequestClient class.

[aaraney]

Until NOAA-OWP/ngen-cal#64 is merged, pandas will need to be built in each gh action run (unless we add a cache) for 3.10 and 3.11 b.c. ngen-cal requires an older version of pandas that is not pre-built for these versions.

[aaraney]

NOAA-OWP/ngen-cal#64 has been merged. This should be good to go now.