Update git submodules

* Update docs/submodules/sdc.git from branch 'master'
  to a994931dc349c93ba9b5c9bc7b517b9dd89a10cc
  - Minor cleanups for BasicAuthenticationFilter

    - Changed String representing encoding to Java's StandardCharsets.UTF_8
    - Added explicit else condition in order to not rely on `abortWith`'s side effects

    Issue-ID: SDC-2917
    Signed-off-by: Chris Andre <chris.andre@yoppworks.com>
    Change-Id: I81cb94c399ff1d810e85c7b63fde195928ab1b08

diff --git a/docs/submodules/sdc.git b/docs/submodules/sdc.git
index c829bbc..a994931 160000 (submodule)
--- a/docs/submodules/sdc.git
+++ b/docs/submodules/sdc.git
@@ -1 +1 @@
-Subproject commit c829bbcfc9505a3ebf6035b53274f8bf22c34cff
+Subproject commit a994931dc349c93ba9b5c9bc7b517b9dd89a10cc