Update git submodules
Update git submodules

* Update plugins/replication from branch 'master'
  to dc9bb2e946e4c6c31e8a4665f30eca6d00017523
  - Merge branch 'stable-3.4'
    
    * stable-3.4:
      Register ProjectDeletion events for gson serialization
    
    Change-Id: I1a9f991eae5b7ac1c3189306c3cda6435ed79f5f
    
  - Register ProjectDeletion events for gson serialization
    
    ProjectDeletion events were not registered event types.
    
    This caused failures when EventGson tried to serialize/deserialize
    objects having those events as field, Throwing the JsonParseException:
    
    ```
    Unknown event type: project-deletion-replication-scheduled
    ```
    
    Register ProjectDeletion event types, similarly to what already done for
    Ref replication events (RefReplicatedEvent, RefReplicationDoneEvent,
    RefReplicationScheduledEvent).
    
    This change cherry-picks change [1]
    
    [1]https://gerrit-review.googlesource.com/c/plugins/replication/+/308383
    
    Bug: Issue 14628
    Change-Id: I7471e9a0f8ea8ec27d5800f785d1c7006b35055c
    
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