Update git submodules

* Update plugins/replication from branch 'master'
  to 39294214aace930fe62dce70f162ae60b281d16d
  - Use switch-statement in ReplicateRefUpdateTypeAdapter.read()
    
    Change-Id: I04db0b3f77f96a83488fca034c5fa764071b72bb
    
diff --git a/plugins/replication b/plugins/replication
index 6a0e987..3929421 160000
--- a/plugins/replication
+++ b/plugins/replication
@@ -1 +1 @@
-Subproject commit 6a0e98744a5be2bd315aeb21193e313a3e9849ad
+Subproject commit 39294214aace930fe62dce70f162ae60b281d16d