Bump groonga-client from 0.6.1 to 0.6.2
Bump groonga-client from 0.6.1 to 0.6.2

Bumps [groonga-client](https://github.com/ranguba/groonga-client) from 0.6.1 to 0.6.2.
- [Release notes](https://github.com/ranguba/groonga-client/releases)
- [Commits](https://github.com/ranguba/groonga-client/compare/0.6.1...0.6.2)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
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