pkgin: Update to 22.9.0.

## Version 22.9.0 (2022-09-06)

* Pass verbose flag down to libfetch operations too.

* Update show-keep/show-no-keep output format (Sunil Nimmagadda).

* Add -4 and -6 flags to force libfetch to use IPv4/IPv6 (Staffan Thom辿n,
  Sebastian Wiedenroth).

* Convert many SQL queries to use sqlite3_snprintf() and sqlite3 format
  strings to reduce potential SQL injection attacks (Taylor R Campbell).

* Use sqlite3 savepoints, fixing issue around interrupted local summary
  updates (Taylor R Campbell).

* Use posix_spawn() on newer macOS.

(jperkin)