message: op-chain-ops: migrate db monotonic timestamp
  Ensure that the timestamps are monotonic when
  creating the bedrock transition block
diff: @@ -58,6 +58,13 @@ func MigrateDB(ldb ethdb.Database, config *DeployConfig, l1Block *types.Block, m
  return nil, errors.New("must configure L2 genesis block base fee per gas")
  }
  + // Ensure monotonic timestamps
  + if uint64(config.L2OutputOracleStartingTimestamp) <= header.Time {
  + return nil, fmt.Errorf(
  + "L2 output oracle starting timestamp (%d) is less than the header timestamp (%d)", config.L2OutputOracleStartingTimestamp, header.Time,
  + )
  + }
  +
  underlyingDB := state.NewDatabaseWithConfig(ldb, &trie.Config{
  Preimages: true,
  })
  