libsForQt5.kdb: 3.0.2 -> 3.1.0

Semi-automatic update generated by https://github.com/ryantm/nix-update tools. These checks were done:

- built on NixOS
- ran `/nix/store/a5vvjndyd5qccy1fphllczql9hdfnfah-kdb-3.1.0/bin/kdb3_sqlite3_dump -h` got 0 exit code
- ran `/nix/store/a5vvjndyd5qccy1fphllczql9hdfnfah-kdb-3.1.0/bin/kdb3_sqlite3_dump --help` got 0 exit code
- ran `/nix/store/a5vvjndyd5qccy1fphllczql9hdfnfah-kdb-3.1.0/bin/kdb3_sqlite3_dump -h` and found version 3.1.0
- ran `/nix/store/a5vvjndyd5qccy1fphllczql9hdfnfah-kdb-3.1.0/bin/kdb3_sqlite3_dump --help` and found version 3.1.0
- found 3.1.0 with grep in /nix/store/a5vvjndyd5qccy1fphllczql9hdfnfah-kdb-3.1.0
- directory tree listing: https://gist.github.com/05674b3e604ee41cd435090c4b6c8101