cbatticon: 1.6.7 -> 1.6.8 (#38747)

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

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

These checks were done:

- built on NixOS
- ran ‘/nix/store/b9f5y9awpbx1m193hrb57bwv70xg08cb-cbatticon-1.6.8/bin/cbatticon -h’ got 0 exit code
- ran ‘/nix/store/b9f5y9awpbx1m193hrb57bwv70xg08cb-cbatticon-1.6.8/bin/cbatticon --help’ got 0 exit code
- ran ‘/nix/store/b9f5y9awpbx1m193hrb57bwv70xg08cb-cbatticon-1.6.8/bin/cbatticon -v’ and found version 1.6.8
- ran ‘/nix/store/b9f5y9awpbx1m193hrb57bwv70xg08cb-cbatticon-1.6.8/bin/cbatticon --version’ and found version 1.6.8
- found 1.6.8 with grep in /nix/store/b9f5y9awpbx1m193hrb57bwv70xg08cb-cbatticon-1.6.8
- directory tree listing: https://gist.github.com/248717637ae5df50bb8a3da4134c627b