Fix selfcheck with the latest version of types-typed-ast (#14883)

The latest version of `types-typed-ast` includes
python/typeshed@62a833c,
which means we now have an unused `type: ignore` comment, which causes
the selfcheck to fail with the latest version of `types-typed-ast`

build-requirements.txt

@@ -2,4 +2,4 @@
 -r mypy-requirements.txt
 types-psutil
 types-setuptools
-types-typed-ast>=1.5.8,<1.6.0
+types-typed-ast>=1.5.8.5,<1.6.0

mypy/fastparse.py

@@ -844,7 +844,7 @@ def translate_module_id(self, id: str) -> str:
  def visit_Module(self, mod: ast3.Module) -> MypyFile:
  self.type_ignores = {}
  for ti in mod.type_ignores:
- parsed = parse_type_ignore_tag(ti.tag) # type: ignore[attr-defined]
+ parsed = parse_type_ignore_tag(ti.tag)
  if parsed is not None:
  self.type_ignores[ti.lineno] = parsed
  else:

pyproject.toml

@@ -13,7 +13,7 @@ requires = [
  # the following is from build-requirements.txt
  "types-psutil",
  "types-setuptools",
- "types-typed-ast>=1.5.8,<1.6.0",
+ "types-typed-ast>=1.5.8.5,<1.6.0",
 ]
 build-backend = "setuptools.build_meta"