There is a 3.19 BIOS update for the 11th gen. 11th Gen Intel Core BIOS 3.19 release
The 3.06 BIOS is for the 12th gen. 12th Gen Intel Core BIOS 3.06 Beta
To clarify: The 11th Gen shipped in 2021 with 3.06 BIOS. The latest BIOS for 11th Gen appears to be 3.19. So there are still some 3.06 versions on 11th Gen that ought to be updated.