Merge pull request #7415 from bitromortac/2302-max-htlc

routing+discovery: fail non-maxHTLC channel updates in validation

docs/release-notes/release-notes-0.16.0.md

@@ -21,6 +21,9 @@ of order is also [fixed](https://github.com/lightningnetwork/lnd/pull/7264).
   bytes](https://github.com/lightningnetwork/lnd/pull/6913). This moves LND
   closer to being spec compliant.
 
+* Channel updates without the maxHTLC message flag set are recognized as invalid
+  and are [not relayed](https://github.com/lightningnetwork/lnd/pull/7415).
+
 ## RPC
 
 * The `RegisterConfirmationsNtfn` call of the `chainnotifier` RPC sub-server