Update git submodules

* Update plugins/replication from branch 'stable-3.8'
  to 5cfb07aa0e1e133a066ae81951b8e156d7dfd4e4
  - synchronizePendingEvents: Fix stuck replaying flag
    
    Similar to change I4628a574, the replaying flag has a chance to become
    stuck as true if an exception is thrown while accumulating prunable
    replication tasks, which happens before the earlier fix is relevant.
    Catch and log the exception and continue since synchronizing with a
    subset of prunable tasks isn't much of a problem.
    
    Change-Id: I935c3252e8c3da63ac248b051380558b749ea76e
    Release-Notes: Fixed chance for exceptions to block future distributor runs
    
diff --git a/plugins/replication b/plugins/replication
index 584aea1..5cfb07a 160000
--- a/plugins/replication
+++ b/plugins/replication
@@ -1 +1 @@
-Subproject commit 584aea1a8968a9162d78460422a285a87910f502
+Subproject commit 5cfb07aa0e1e133a066ae81951b8e156d7dfd4e4