Sync typeshed (#7010)

Guido van Rossum · web-flow · commit df52a85291c4 · 2019-06-17T11:31:51.000-07:00
diff --git a/mypy/typeshed b/mypy/typeshed
@@ -1 +1 @@
-Subproject commit 5327484176f7d56dc72e68fc04f03bd3fd2cabdb
+Subproject commit 6258e7ddfd92ac1a770013b8f5dc5aa719c3461d
