Bump pg from 1.5.8 to 1.5.9 in the ruby-minor-production group

Bumps the ruby-minor-production group with 1 update: [pg](https://github.com/ged/ruby-pg).


Updates `pg` from 1.5.8 to 1.5.9
- [Changelog](https://github.com/ged/ruby-pg/blob/master/History.md)
- [Commits](ged/ruby-pg@v1.5.8...v1.5.9)

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

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile.lock

@@ -297,7 +297,7 @@ GEM
     parser (3.3.5.0)
       ast (~> 2.4.1)
       racc
-    pg (1.5.8)
+    pg (1.5.9)
     power_assert (2.0.3)
     premailer (1.18.0)
       addressable