fix: Exclude mypy cache folders from sdists

Author: pawamoy

project/pyproject.toml.jinja

@@ -55,7 +55,7 @@ getter = "scripts.get_version:get_version"
 
 [tool.pdm.build]
 # Include as much as possible in the source distribution, to help redistributors.
-excludes = ["**/.pytest_cache"]
+excludes = ["**/.pytest_cache", "**/.mypy_cache"]
 source-includes = [
     "config",
     "docs",