Update git submodules

* Update docs/submodules/snaps from branch 'stable/fraser'
  - Miscellaneous minor stability fixes

    Change-Id: Iad8a7b6358f881d1c2935cc619cfa96f1196a675
    Signed-off-by: spisarski <s.pisarski@cablelabs.com>

diff --git a/docs/submodules/snaps b/docs/submodules/snaps
index 1eb65fc..b351d8c 160000 (submodule)
--- a/docs/submodules/snaps
+++ b/docs/submodules/snaps
@@ -1 +1 @@
-Subproject commit 1eb65fc680dad92540327dca27da49308dc0a99f
+Subproject commit b351d8cf4d882c7ec3acbd0111b4d0bf1747c9d3