Updating submodules

Summary:
GitHub commits:

facebook/CacheLib@34a1659
facebook/fatal@fa438c9
facebook/fb303@f2d9ebb
facebook/fbthrift@7352c9f
facebook/folly@ec680d2
facebook/litho@332029f
facebook/mcrouter@23892d2
facebook/mvfst@05c2df2
facebook/ocamlrep@707aa9b
facebook/proxygen@9f93974
facebook/rocksdb@2940aca
facebook/wangle@dd4425b
facebook/watchman@05e6c90
11c0b6b
facebookexperimental/rust-shed@9deb5e9
facebookincubator/fizz@a1a3976
facebookincubator/katran@b2bb68b
facebookincubator/velox@3e4a26a
pytorch/FBGEMM@dc20966

Reviewed By: jailby

fbshipit-source-id: a189d0888ca0739de17c4fd236ae515ebab7866d

build/deps/github_hashes/facebook/folly-rev.txt

@@ -1 +1 @@
-Subproject commit 6ace96b741ac5e0b5902acdaed1a1828ab8efbdf
+Subproject commit ec680d269386c81af5e2aae0ae543432db13827b