pyproject.toml: exclude generated files from mypy check

Configure mypy not to check the files we plan to generate from the
grpc toolchain.

Signed-off-by: John Mulligan <[email protected]>

Author: phlogistonjohn

pyproject.toml

@@ -32,3 +32,8 @@ disallow_untyped_defs = false
 [[tool.mypy.overrides]]
 module = "sambacc.schema.*"
 disallow_untyped_defs = false
+
+[[tool.mypy.overrides]]
+module = "sambacc.grpc.generated.*"
+disallow_untyped_defs = false
+ignore_errors = true