Bump pg from 0.18.4 to 1.1.4
Bump pg from 0.18.4 to 1.1.4

Bumps [pg](https://bitbucket.org/ged/ruby-pg) from 0.18.4 to 1.1.4.
- [Changelog](https://bitbucket.org/ged/ruby-pg/src/default/History.rdoc)
- [Commits](https://bitbucket.org/ged/ruby-pg/commits)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
benzimmer/dd53