Lewis Hamilton and George Russell will continue as Mercedes' driver line-up for at least the next two years.Hamilton has signed a new contract that will extend his period with the team to 13 years and keep him in F1 well past his 40th birthday.And Russell, who joined Mercedes in 2022, has also signed a two-year deal.The move confirms pledges by Hamilton and team principal Toto Wolff that a new deal for the seven-time champion was only a matter of time this season.For Hamilton, it allows him to continue a quest for a record eighth world drivers' title, which both driver…