taktuk: 3.7.5 -> 3.7.7

Semi-automatic update. These checks were done:

- built on NixOS
- ran `/nix/store/l4zd353icm418x6asy4123a3gcpy14cr-taktuk-3.7.7/bin/taktuk -h` got 0 exit code
- ran `/nix/store/l4zd353icm418x6asy4123a3gcpy14cr-taktuk-3.7.7/bin/taktuk --help` got 0 exit code
- ran `/nix/store/l4zd353icm418x6asy4123a3gcpy14cr-taktuk-3.7.7/bin/taktuk help` got 0 exit code
- ran `/nix/store/l4zd353icm418x6asy4123a3gcpy14cr-taktuk-3.7.7/bin/taktuk -v` and found version 3.7.7
- ran `/nix/store/l4zd353icm418x6asy4123a3gcpy14cr-taktuk-3.7.7/bin/taktuk --version` and found version 3.7.7
- ran `/nix/store/l4zd353icm418x6asy4123a3gcpy14cr-taktuk-3.7.7/bin/taktuk version` and found version 3.7.7
- ran `/nix/store/l4zd353icm418x6asy4123a3gcpy14cr-taktuk-3.7.7/bin/taktuk -h` and found version 3.7.7
- ran `/nix/store/l4zd353icm418x6asy4123a3gcpy14cr-taktuk-3.7.7/bin/taktuk --help` and found version 3.7.7
- ran `/nix/store/l4zd353icm418x6asy4123a3gcpy14cr-taktuk-3.7.7/bin/taktuk help` and found version 3.7.7
- found 3.7.7 with grep in /nix/store/l4zd353icm418x6asy4123a3gcpy14cr-taktuk-3.7.7
- found 3.7.7 in filename of file in /nix/store/l4zd353icm418x6asy4123a3gcpy14cr-taktuk-3.7.7