Note down when we can bump the latestReleasedNodeVersion

ouroboros-consensus-cardano/src/ouroboros-consensus-cardano/Ouroboros/Consensus/Cardano/Node.hs

@@ -391,6 +391,9 @@ instance
       , (NodeToClientV_21, CardanoNodeToClientVersion17)
       ]
 
+  -- This is not set to NodeToClientV_21 on purpose because that one is just a
+  -- stub. Once we have a proper ouroboros-network to integrate that comes with
+  -- said version and we remove the SRP then we can bump this value.
   latestReleasedNodeVersion _prx = (Just NodeToNodeV_14, Just NodeToClientV_20)
 
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