Stop using deprecated `...` argument of `across()`

[mccarthy-m-g]

Here:

mipdeval/R/calculate_stats.R

Line 49 in ea8242e

dplyr::mutate(dplyr::across(dplyr::everything(), round, rounding)) |>

Should use function(.x) round(.x, rounding) or \(.x) round(.x, rounding) instead.