Add content_guid filtering to get_usage()

[jonkeane]

Intent

Now that connect accepts GUID filters on the hits endpoint, add that to the sdk

Approach

Checklist

• Does this change update NEWS.md (referencing the connected issue if necessary)?
• Does this change need documentation? Have you run devtools::document()?

[karawoo]

Can we add a news bullet please?

[jonkeane]

Can we add a news bullet please?

Of course, I'll send one in a sec

The integration tests look unrelated but I don't know what's up with those: https://github.com/posit-dev/connectapi/actions/runs/22406879377/job/64869098248#step:6:530

══ Failed ══════════════════════════════════════════════════════════════════════
── 1. Failure ('test-get.R:13:3'): get_users works ─────────────────────────────
Expected `purrr::map_chr(vctrs::vec_ptype(users), typeof)` to equal `purrr::map_chr(vctrs::vec_ptype(connectapi_ptypes$users), typeof)`.
Differences:
`names(actual)[8:12]`:   "active_time" "confirmed" "locked" "external_id" "guid"
`names(expected)[8:11]`: "active_time" "confirmed" "locked"               "guid"

`actual[9:12]`:   "logical" "logical" "character" "character"
`expected[9:11]`: "logical" "logical" "character"            


── 2. Failure ('test-lazy.R:38:3'): users works ────────────────────────────────
Expected `purrr::map_chr(vctrs::vec_ptype(users_local), typeof)` to equal `purrr::map_chr(vctrs::vec_ptype(connectapi_ptypes$users), typeof)`.
Differences:
`names(actual)[8:12]`:   "active_time" "confirmed" "locked" "external_id" "guid"
`names(expected)[8:11]`: "active_time" "confirmed" "locked"               "guid"

`actual[9:12]`:   "logical" "logical" "character" "character"
`expected[9:11]`: "logical" "logical" "character"            

[karawoo]

They're failing on main too, it's due to a new field in the API responses. I'll fix separately, you can ignore.

[jonkeane]

Added news and a version guard

[karawoo]

@jonkeane can you update the unit tests so they have the right server version?

[karawoo]

@jonkeane actually if you don't mind, i'll just do it -- it'll be a quick fix and will unblock me moving forward with the cran release

[karawoo]

the failing test is fixed on main, everything else looks good. I'm going to merge this in order to proceed with the release.