[stable2412] Backport #6662 (#6803)

Backport #6662 into `stable2412` from eskimor.

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Co-authored-by: eskimor <[email protected]>

Author: paritytech-cmd-bot-polkadot-sdk[bot]

polkadot/node/network/collator-protocol/src/error.rs

@@ -122,7 +122,7 @@ impl SecondingError {
 			PersistedValidationDataMismatch |
 				CandidateHashMismatch |
 				RelayParentMismatch |
-				Duplicate | ParentHeadDataMismatch |
+				ParentHeadDataMismatch |
 				InvalidCoreIndex(_, _) |
 				InvalidSessionIndex(_, _) |
 				InvalidReceiptVersion(_)