feat(dict): Update dictionaries to latest versions. (#469)

> rikaikun@1.0.0 update-db /home/runner/work/rikaikun/rikaikun
> ts-node --log-error utils/update-db

Fetching word dictionary...
Parsing dictionary created: 2021-05-10
Writing index...
Fetching names dictionary...
Parsing dictionary created: 2021-05-10
Writing index...
Fetching kanji dictionaries...
Parsing KANJIDIC dictionary from 2021-05-10
Parsing KANJD212 dictionary from 2021-05-10
Done.

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[1]: https://github.com/peter-evans/create-pull-request