Update git submodules

* Update plugins/reviewnotes from branch 'master'
  - Fix errant tab
    
    Change-Id: I58e1d3f7ccb67e468c8b477da3859763a4541c64
    
  - Reduce boilerplate with Maps.immutableEntry
    
    Change-Id: I5b3ea3d33c2e86dd3b7fa0ab0a32490a4a61a0ca
    
diff --git a/plugins/reviewnotes b/plugins/reviewnotes
index e9c66c6..45f6975 160000
--- a/plugins/reviewnotes
+++ b/plugins/reviewnotes
@@ -1 +1 @@
-Subproject commit e9c66c6f08edb641d3c935c2fdcaa3fbf3a85d29
+Subproject commit 45f69757be42ac61dfba915b6e2801525416f1af