Skip PyHamcrest typing in mypy

PyHamcrest ships py.typed but the annotations mislead mypy (e.g.
all_of/only_contains with Union[Matcher[T], T]). Treat the library as
Any by skipping imports until upstream fixes land (see
hamcrest/PyHamcrest#267).

Author: agentydragon

mypy.ini

@@ -46,8 +46,12 @@ ignore_missing_imports = True
 [mypy-compact_json.*]
 ignore_missing_imports = True
 
+# PyHamcrest has py.typed but its type annotations are broken - functions like
+# all_of() and only_contains() use Union[Matcher[T], T] which mypy can't infer,
+# defaulting to Matcher[Never]. Skip analysis to treat as Any.
+# TODO: Remove once https://github.com/hamcrest/PyHamcrest/pull/267 is released
 [mypy-hamcrest.*]
-ignore_missing_imports = True
+follow_imports = skip
 
 # reaktiv has type hints but no py.typed marker file
 [mypy-reaktiv.*]