Update wana_kana to 4.0.0

[tats-u]

Pull Request

Related issue

• Fixes #313
• https://github.com/meilisearch/meilisearch/pull/3588#issuecomment-1543840378
• https://github.com/PSeitz/wana_kana_rust/issues/13
• https://github.com/meilisearch/meilisearch/pull/3588/commits/0fbda6383b13170ce04c1bd002c643812d32bb22
• https://github.com/orgs/meilisearch/discussions/532#discussioncomment-9999921

What does this PR do?

wana_kana used to easily panic. The panicability made it difficult to adopt it in the Meilisearch core. Update it to the latest version that doesn't panic.

PR checklist

Please check if your PR fulfills the following requirements:

• [x] Does this PR fix an existing issue, or have you listed the changes applied in the PR description (and why they are needed)?
• [x] Have you read the contributing guidelines?
• [x] Have you made sure that the title is accurate and descriptive of the changes?

Thank you so much for contributing to Meilisearch!

[ManyTheFish]

Hello @tats-u, can you please re-add the Japanese transliteration in the default Japanese tokenization in line 42? :)

[tats-u]

@ManyTheFish I'll blame and revert the commit that disabled that feature in next week.

[meili-bors[bot]]

Build succeeded:

• Run Rustfmt
• tests
• Run Clippy