fix(ci): remove pyright from CI lint - hangs in GitHub Actions

Pyright requires a Node.js installation via nodeenv which is unreliable
in CI. mypy strict mode provides equivalent type coverage. Developers can
still run pyright locally.

Author: wolf-j3blair

tox.ini

@@ -32,7 +32,6 @@ commands_pre =
 commands =
     ruff check .
     mypy
-    pyright
 
 [testenv:format]
 description = Format the code