[3rdparty] bump symfony/console to 2.7.7

diff --git a/3rdparty b/3rdparty
index d6fce71b81fd184b143341f509fac1d3d5f60b9e..685012c78a2718f4fdfc1f5855abd3b07a39a49f 160000 (submodule)
--- a/3rdparty
+++ b/3rdparty
@@ -1 +1 @@
-Subproject commit d6fce71b81fd184b143341f509fac1d3d5f60b9e
+Subproject commit 685012c78a2718f4fdfc1f5855abd3b07a39a49f