update proto submodule to get documentation in proto files

JonasVautherin · JonasVautherin · commit 1f57e448946c · 2019-09-04T05:05:08.000+02:00
diff --git a/proto b/proto
@@ -1 +1 @@
-Subproject commit d2042e2dc116529db30d0b0c31aa7121cdc7e4b7
+Subproject commit 67bdd0135492ebd8cdeba472fd9c4d8a201fc5ec
