Log Message:
(math/R-vctrs) Updated 0.6.3 to 0.6.5

# vctrs 0.6.5

* Internal changes requested by CRAN around C level format strings (#1896).

* Fixed tests related to changes to `dim<-()` in R-devel (#1889).

# vctrs 0.6.4

* Fixed a performance issue with `vec_c()` and ALTREP vectors (in particular,
  the new ALTREP list vectors in R-devel) (#1884).

* Fixed an issue with complex vector tests related to changes in R-devel
  (#1883).

* Added a class to the `vec_locate_matches()` error that is thrown when an
  overflow would otherwise occur (#1845).

* Fixed an issue with `vec_rank()` and 0-column data frames (#1863).