Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 66781db64d1839f283ce99278393f2c65baf9263
  - Merge "Add fluent setters for BuildingBlocks and ExecuteBuildingBlock"
  - Add fluent setters for BuildingBlocks and ExecuteBuildingBlock

    Test which check more than one functionallity were separarted.
    Minor code improvements around BB and EBB.

    Issue-ID: SO-2582
    Change-Id: I318f8ac299f7204fdd6799108182a29e519724d9
    Signed-off-by: kjaniak <kornel.janiak@nokia.com>

diff --git a/docs/submodules/so.git b/docs/submodules/so.git
index d9691b0..66781db 160000 (submodule)
--- a/docs/submodules/so.git
+++ b/docs/submodules/so.git
@@ -1 +1 @@
-Subproject commit d9691b0c73b0d9cace84ca1ed7b0a30ccecc3fbd
+Subproject commit 66781db64d1839f283ce99278393f2c65baf9263