Update git submodules

* Update docs/submodules/snaps from branch 'master'
  - Merge "Compare strings instead of objects in SecurityGroupConfig"
  - Compare strings instead of objects in SecurityGroupConfig

    It could have worked thanks to interned strings.

    Change-Id: If56cc44fe35ca06bc9033af620ddd3c0586877fe
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/snaps b/docs/submodules/snaps
index 725293a..764fcbb 160000 (submodule)
--- a/docs/submodules/snaps
+++ b/docs/submodules/snaps
@@ -1 +1 @@
-Subproject commit 725293a89c9d026339e39edfe2cdcf807677a4a7
+Subproject commit 764fcbbdb1e91a64d1abec9554badf61bf72ead9