ci: enable mypy strict mode

Author: mariuswinger

api/pyproject.toml

@@ -54,9 +54,8 @@ requires = ["poetry-core>=1.0.0"]
 build-backend = "poetry.core.masonry.api"
 
 [tool.mypy]
-
 plugins = ["pydantic.mypy"]
-# strict = true
+strict = true
 exclude = ["/tests/"]
 ignore_missing_imports = true
 namespace_packages = true