openfortivpn: 1.6.0 -> 1.7.0

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

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

These checks were done:

- built on NixOS
- ran ‘/nix/store/p02dl9fy2g9f6dddm4i0z1nbi4b4vk7j-openfortivpn-1.7.0/bin/openfortivpn -h’ got 0 exit code
- ran ‘/nix/store/p02dl9fy2g9f6dddm4i0z1nbi4b4vk7j-openfortivpn-1.7.0/bin/openfortivpn --help’ got 0 exit code
- ran ‘/nix/store/p02dl9fy2g9f6dddm4i0z1nbi4b4vk7j-openfortivpn-1.7.0/bin/openfortivpn help’ got 0 exit code
- ran ‘/nix/store/p02dl9fy2g9f6dddm4i0z1nbi4b4vk7j-openfortivpn-1.7.0/bin/openfortivpn --version’ and found version 1.7.0
- found 1.7.0 with grep in /nix/store/p02dl9fy2g9f6dddm4i0z1nbi4b4vk7j-openfortivpn-1.7.0
- directory tree listing: https://gist.github.com/34708b90f0d4fc975a7b9dbd4670bfee