pyproject: do not require typing in the schema dir

This tool is only run at "build time" and is not a direct part of the
sambacc library code.

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

Author: phlogistonjohn

pyproject.toml

@@ -28,3 +28,7 @@ disallow_untyped_defs = true
 [[tool.mypy.overrides]]
 module = "sambacc.commands.*"
 disallow_untyped_defs = false
+
+[[tool.mypy.overrides]]
+module = "sambacc.schema.*"
+disallow_untyped_defs = false