replace the usage of u/snake-key with u/->snake_case_en

[dodg3this]

Summary

Clickhouse driver fails at syncing databases with the latest metabase release (version 0.46.3) with the below error:

java.lang.IllegalStateException: Attempting to call unbound fn: #'metabase.util/snake-key

This is because the function snake-key is replaced with ->snake_case_en in PR

This PR replaces the usage of the old function with the new one.

Checklist

Delete items not relevant to your PR:

• [ ] Unit and integration tests covering the common scenarios were added
• [ ] A human-readable description of the changes was provided to include in CHANGELOG
• [ ] For significant changes, documentation in https://github.com/ClickHouse/clickhouse-docs was updated with further explanations or tutorials

Resolves https://github.com/ClickHouse/metabase-clickhouse-driver/issues/161

[CLAassistant]

All committers have signed the CLA.

[slvrtrn]

Thanks for the quick fix!

[slvrtrn]

@dodg3this, I checked it locally. This commit does not seem to be a part of the 0.46.3 tag; it's in the master branch. There is no mention of snake_case_en in the source code on my v0.46.3 checkout, but the old snake-key is still there.

Are you sure you were not running the latest master build instead of 0.46.3?

[dodg3this]

Sorry about the false alarm. You're right. I am working with the master branch.

[slvrtrn]

@dodg3this, no worries! Thanks for the commit anyway; it will be useful for 0.47+. I will keep it open until then.