Log Message:
databases/ruby-pg: update to 1.4.6

1.4.6 [2023-02-26] Lars Kanis lars@greiz-reinsdorf.de

* Add japanese README file.  #502

* Improve discard_results to not block under memory pressure.  #500

* Use a dedicated error class PG::LostCopyState for errors due to another
  query within copy_data and mention that it's probably due to another
  query.  Previously the "no COPY in progress" PG::Error was less specific.
  #499

* Make sure an error in put_copy_end of copy_data doesn't lose the original
  exception.

* Disable nonblocking mode while large object calls.  #498 Since pg-1.3.0
  libpq's "lo_*" calls failed when a bigger amount of data was transferred.
  This specifically forced the active_storage-postgresql gem to use
  pg-1.2.3.

* Add rdoc options to gemspec, so that "gem install" generates complete
  offline documentation.

* Add binary Windows gems for Ruby 3.2.

* Update Windows fat binary gem to PostgreSQL-15.2 and OpenSSL-3.0.8.