{cards} arg rename updates (#53)

**What changes are proposed in this pull request?**
* Style this entry in a way that can be copied directly into `NEWS.md`.
(#<issue number>, @<username>)

Provide more detail here as needed.

**Reference GitHub issue associated with pull request.** _e.g., 'closes
#<issue number>'_



--------------------------------------------------------------------------------

Pre-review Checklist (if item does not apply, mark is as complete)
- [ ] **All** GitHub Action workflows pass with a ✅
- [ ] PR branch has pulled the most recent updates from master branch:
`usethis::pr_merge_main()`
- [ ] If a bug was fixed, a unit test was added.
- [ ] Code coverage is suitable for any new functions/features
(generally, 100% coverage for new code): `devtools::test_coverage()`
- [ ] Request a reviewer

Reviewer Checklist (if item does not apply, mark is as complete)

- [ ] If a bug was fixed, a unit test was added.
- [ ] Run `pkgdown::build_site()`. Check the R console for errors, and
review the rendered website.
- [ ] Code coverage is suitable for any new functions/features:
`devtools::test_coverage()`

When the branch is ready to be merged:
- [ ] Update `NEWS.md` with the changes from this pull request under the
heading "`# cards (development version)`". If there is an issue
associated with the pull request, reference it in parentheses at the end
update (see `NEWS.md` for examples).
- [ ] **All** GitHub Action workflows pass with a ✅
- [ ] Approve Pull Request
- [ ] Merge the PR. Please use "Squash and merge" or "Rebase and merge".

DESCRIPTION

@@ -12,7 +12,7 @@ BugReports: https://github.com/insightsengineering/cardx/issues
 Depends:
     R (>= 4.1)
 Imports:
-    cards (>= 0.0.0.9037),
+    cards (>= 0.0.0.9039),
     cli (>= 3.6.1),
     dplyr (>= 1.1.2),
     glue (>= 1.6.2),

R/ard_proportion_ci.R

@@ -48,7 +48,7 @@ ard_proportion_ci <- function(data, variables, by = dplyr::group_vars(data),
     data = data,
     variables = {{ variables }},
     by = {{ by }},
-    statistics =
+    statistic =
       ~ list(
         prop_ci =
           switch(method,