Update git submodules

* Update plugins/hooks from branch 'stable-2.16'
  to e1745a8ab48fdab8da2500d3d0b8e3da9cd1090d
  - Submit: Handle potentially missing username
    
    Bug: Issue 11112
    Change-Id: Ie5ed372b6cf890a9cebd5860af8905dedb306e6a
    
diff --git a/plugins/hooks b/plugins/hooks
index 47e4b87..e1745a8 160000
--- a/plugins/hooks
+++ b/plugins/hooks
@@ -1 +1 @@
-Subproject commit 47e4b87fca52c5b1dea9ab37833e36fb4f57d3fb
+Subproject commit e1745a8ab48fdab8da2500d3d0b8e3da9cd1090d