Update underlying Marian version.

2020-05-06 12:09:41 +01:00 · 2020-05-06 12:09:41 +01:00 · e3e3c17fe2
--- a/3rd_party/marian
+++ b/3rd_party/marian
@ -1 +1 @@
-Subproject commit 555bfe22da7461e58262ae0c80c0f0afa7cd0ae0
+Subproject commit 69378ac90bc47f19d018f15b080dc46ade789561