opendht: 1.7.0 -> 1.7.1

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

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

These checks were done:

- built on NixOS
- ran ‘/nix/store/jaqkxg2ypkyh45w215kl1px7p8bvjvza-opendht-1.7.1/bin/dhtnode -h’ got 0 exit code
- ran ‘/nix/store/jaqkxg2ypkyh45w215kl1px7p8bvjvza-opendht-1.7.1/bin/dhtnode --help’ got 0 exit code
- ran ‘/nix/store/jaqkxg2ypkyh45w215kl1px7p8bvjvza-opendht-1.7.1/bin/dhtnode help’ got 0 exit code
- ran ‘/nix/store/jaqkxg2ypkyh45w215kl1px7p8bvjvza-opendht-1.7.1/bin/dhtchat -h’ got 0 exit code
- ran ‘/nix/store/jaqkxg2ypkyh45w215kl1px7p8bvjvza-opendht-1.7.1/bin/dhtchat --help’ got 0 exit code
- ran ‘/nix/store/jaqkxg2ypkyh45w215kl1px7p8bvjvza-opendht-1.7.1/bin/dhtchat help’ got 0 exit code
- ran ‘/nix/store/jaqkxg2ypkyh45w215kl1px7p8bvjvza-opendht-1.7.1/bin/dhtscanner -h’ got 0 exit code
- ran ‘/nix/store/jaqkxg2ypkyh45w215kl1px7p8bvjvza-opendht-1.7.1/bin/dhtscanner --help’ got 0 exit code
- found 1.7.1 with grep in /nix/store/jaqkxg2ypkyh45w215kl1px7p8bvjvza-opendht-1.7.1
- directory tree listing: https://gist.github.com/a3f2bc9f76c4720e3fec78139e60c160