Update crypto submodule

Update to the merge of "Make test suites compatible with #include <assert.h>"
diff --git a/crypto b/crypto
index 8907b01..86268e1 160000
--- a/crypto
+++ b/crypto
@@ -1 +1 @@
-Subproject commit 8907b019e756d2f02f21a1a32f072d20de13965e
+Subproject commit 86268e1d302355ad8fd8e5ca5f1a7c7af8640678