mypy: Add no_incremental option

This option avoids using a cache. It is slower but prevents some issues
with `mypy` giving different results on different runs (typically
complaining about some `type: ignore[issue]` not being used but when
removing it complaining about an `issue` again.

Signed-off-by: Leandro Lucarella <[email protected]>

Author: llucax

pyproject.toml

@@ -135,6 +135,9 @@ testpaths = ["tests", "src"]
 asyncio_mode = "auto"
 required_plugins = ["pytest-asyncio", "pytest-mock"]
 
+[tool.mypy]
+no_incremental = true
+
 [[tool.mypy.overrides]]
 module = [
   "async_solipsism",