Update git submodules

* Update docs/submodules/snaps from branch 'master'
  - Merge "Created new class KeypairSettingsError."
  - Created new class KeypairSettingsError.

    Raising KeypairSettingsError in KeypairSettings instead of Exception.

    JIRA: SNAPS-133

    Change-Id: Ie67f1da429f7d7a5e1c71c4f2f30bf9d11bbe209
    Signed-off-by: spisarski <s.pisarski@cablelabs.com>

diff --git a/docs/submodules/snaps b/docs/submodules/snaps
index 6c43b69..3e84444 160000 (submodule)
--- a/docs/submodules/snaps
+++ b/docs/submodules/snaps
@@ -1 +1 @@
-Subproject commit 6c43b694e139efdf77540ac1518c422c5bc2574c
+Subproject commit 3e84444f51b9cedc804eb03e4aa9a69cb7a422d9