chore: Update mainnet3 relayer image to latest main (#7231)

Co-authored-by: Danil Nemirovsky <[email protected]>
Co-authored-by: Claude <[email protected]>

Author: ameten

typescript/infra/config/environments/mainnet3/agent.ts

@@ -862,7 +862,7 @@ const hyperlane: RootAgentConfig = {
     rpcConsensusType: RpcConsensusType.Fallback,
     docker: {
       repo,
-      tag: '02db74b-20251013-232420',
+      tag: '7d6a86b-20251021-100620',
     },
     blacklist,
     gasPaymentEnforcement: gasPaymentEnforcement,