Update git submodules

* Update ChronoSync from branch 'master'
  to d74b6977ca5380a7206ba0166d2dab137ebf59d9
  - docs: only use sphinxcontrib-doxylink on Python 3
    
    disable sphinxcontrib-googleanalytics
    
    refs #4553
    
    Change-Id: Idf9bb27e2ec98d30f1fb16394552d87ffc6dc471
    
diff --git a/ChronoSync b/ChronoSync
index 0b3beab..d74b697 160000
--- a/ChronoSync
+++ b/ChronoSync
@@ -1 +1 @@
-Subproject commit 0b3beaba0cfd912d4763f99172e33491f86b5241
+Subproject commit d74b6977ca5380a7206ba0166d2dab137ebf59d9