Bump pg from 1.3.3 to 1.3.4
Bump pg from 1.3.3 to 1.3.4

Bumps [pg](https://github.com/ged/ruby-pg) from 1.3.3 to 1.3.4.
- [Release notes](https://github.com/ged/ruby-pg/releases)
- [Changelog](https://github.com/ged/ruby-pg/blob/master/History.rdoc)
- [Commits](https://github.com/ged/ruby-pg/compare/v1.3.3...v1.3.4)

---
updated-dependencies:
- dependency-name: pg
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
diowa/ruby2-rails5-bootstrap-heroku,diowa/ruby2-rails5-bootstrap-heroku,diowa/ruby2-rails5-bootstrap-heroku