[REL-6409] update API version and client

[sloloris]

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Related Jira issue: REL-6409: Bump ld API version in ld-find-code-refs

[blaqbern]

Damn, that's a lot of changes for upgrading one of our packages 😂

As long as we're not relying on any endpoints with breaking/pagination changes I guess this should be fine?

it's completely removing the LD api-client-go v15 and replacing it with v17. That's why the diff is so big. Not sure why we versioned the api client that way

[sloloris]

Okay I have finally tested this out properly, so it should be good to go