ci: Use depth 1 for syncing assets faster

Signed-off-by: Changho Choi <ch754.choi@samsung.com>

Author: zpzigi754

scripts/deps/assets.sh

@@ -4,6 +4,6 @@ set -e
 
 ROOT=$(git rev-parse --show-toplevel)
 
-cd $ROOT && git submodule update --init assets
+cd $ROOT && git submodule update --init --depth 1 assets
 git submodule update --init --depth 1 $ROOT/third-party/ciborium
 git submodule update --init --depth 1 $ROOT/third-party/coset