tvheadend: 4.2.5 -> 4.2.6

Semi-automatic update generated by https://github.com/ryantm/nix-update tools.

This update was made based on information from https://repology.org/metapackage/tvheadend/versions.

These checks were done:

- built on NixOS
- ran `/nix/store/b6w4xxckl2r7raw0zcyiq27f79cv16ng-tvheadend-4.2.6/bin/tvheadend -h` got 0 exit code
- ran `/nix/store/b6w4xxckl2r7raw0zcyiq27f79cv16ng-tvheadend-4.2.6/bin/tvheadend --help` got 0 exit code
- ran `/nix/store/b6w4xxckl2r7raw0zcyiq27f79cv16ng-tvheadend-4.2.6/bin/tvheadend help` got 0 exit code
- ran `/nix/store/b6w4xxckl2r7raw0zcyiq27f79cv16ng-tvheadend-4.2.6/bin/tvheadend -V` and found version 4.2.6
- ran `/nix/store/b6w4xxckl2r7raw0zcyiq27f79cv16ng-tvheadend-4.2.6/bin/tvheadend -v` and found version 4.2.6
- ran `/nix/store/b6w4xxckl2r7raw0zcyiq27f79cv16ng-tvheadend-4.2.6/bin/tvheadend --version` and found version 4.2.6
- ran `/nix/store/b6w4xxckl2r7raw0zcyiq27f79cv16ng-tvheadend-4.2.6/bin/tvheadend version` and found version 4.2.6
- ran `/nix/store/b6w4xxckl2r7raw0zcyiq27f79cv16ng-tvheadend-4.2.6/bin/tvheadend -h` and found version 4.2.6
- ran `/nix/store/b6w4xxckl2r7raw0zcyiq27f79cv16ng-tvheadend-4.2.6/bin/tvheadend --help` and found version 4.2.6
- ran `/nix/store/b6w4xxckl2r7raw0zcyiq27f79cv16ng-tvheadend-4.2.6/bin/tvheadend help` and found version 4.2.6
- ran `/nix/store/b6w4xxckl2r7raw0zcyiq27f79cv16ng-tvheadend-4.2.6/bin/.tvheadend-wrapped -h` got 0 exit code
- ran `/nix/store/b6w4xxckl2r7raw0zcyiq27f79cv16ng-tvheadend-4.2.6/bin/.tvheadend-wrapped --help` got 0 exit code
- ran `/nix/store/b6w4xxckl2r7raw0zcyiq27f79cv16ng-tvheadend-4.2.6/bin/.tvheadend-wrapped help` got 0 exit code
- ran `/nix/store/b6w4xxckl2r7raw0zcyiq27f79cv16ng-tvheadend-4.2.6/bin/.tvheadend-wrapped -V` and found version 4.2.6
- ran `/nix/store/b6w4xxckl2r7raw0zcyiq27f79cv16ng-tvheadend-4.2.6/bin/.tvheadend-wrapped -v` and found version 4.2.6
- ran `/nix/store/b6w4xxckl2r7raw0zcyiq27f79cv16ng-tvheadend-4.2.6/bin/.tvheadend-wrapped --version` and found version 4.2.6
- ran `/nix/store/b6w4xxckl2r7raw0zcyiq27f79cv16ng-tvheadend-4.2.6/bin/.tvheadend-wrapped version` and found version 4.2.6
- ran `/nix/store/b6w4xxckl2r7raw0zcyiq27f79cv16ng-tvheadend-4.2.6/bin/.tvheadend-wrapped -h` and found version 4.2.6
- ran `/nix/store/b6w4xxckl2r7raw0zcyiq27f79cv16ng-tvheadend-4.2.6/bin/.tvheadend-wrapped --help` and found version 4.2.6
- ran `/nix/store/b6w4xxckl2r7raw0zcyiq27f79cv16ng-tvheadend-4.2.6/bin/.tvheadend-wrapped help` and found version 4.2.6
- found 4.2.6 with grep in /nix/store/b6w4xxckl2r7raw0zcyiq27f79cv16ng-tvheadend-4.2.6
- directory tree listing: https://gist.github.com/9bfa9dd5fc53c3f7b58b2db82fee94ef