Update git submodules

* Update docs/submodules/daisy from branch 'master'
  - Merge "Fix security risks about shell=True"
  - Fix security risks about shell=True

    Change-Id: I2db012e2b6a4325c42d5422901dea52a5ab7f664
    Signed-off-by: Alex Yang <yangyang1@zte.com.cn>

diff --git a/docs/submodules/daisy b/docs/submodules/daisy
index 49205e7..431ed2b 160000 (submodule)
--- a/docs/submodules/daisy
+++ b/docs/submodules/daisy
@@ -1 +1 @@
-Subproject commit 49205e7200afd0ce286d2f685093948cb1f7bf3d
+Subproject commit 431ed2baa96538fd48ebc1e7df8454b60b903de1