Point 3rdparty submodule to the doctrine branch

diff --git a/3rdparty b/3rdparty
index 63cb2847921d668c2b48b572872cfddbcf41bea4..93f76b4392b9e6b60fe0d052793741f348cb2536 160000 (submodule)
--- a/3rdparty
+++ b/3rdparty
@@ -1 +1 @@
-Subproject commit 63cb2847921d668c2b48b572872cfddbcf41bea4
+Subproject commit 93f76b4392b9e6b60fe0d052793741f348cb2536