Indiana Jones isn’t quite as old as Yoda, but he’s getting there. While there is hardly any doubt that the actor who plays him, Harrison Ford, is a more spry octogenarian than Joe Biden, it is worth remembering that when Mr. Ford starred as the swashbuckling archaeologist in “Raiders of the Lost Ark” in 1981, he was in his 30s. The actor says “Indiana Jones and the Dial of Destiny,” which will have its world premiere at Cannes on Thursday, will be his final performance as the iconic character.