build(deps): bump pg from 1.4.6 to 1.5.9

Bumps [pg](https://github.com/ged/ruby-pg) from 1.4.6 to 1.5.9.
- [Changelog](https://github.com/ged/ruby-pg/blob/master/History.md)
- [Commits](ged/ruby-pg@v1.4.6...v1.5.9)

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

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

Gemfile

@@ -11,7 +11,7 @@ gem 'appsignal'
 gem 'devise'
 gem 'delayed_job_active_record'
 gem 'jbuilder'
-gem 'pg', '< 1.5'
+gem 'pg', '< 1.6'
 gem 'puma'
 gem 'notifications-ruby-client'
 gem 'textacular'

Gemfile.lock

@@ -213,7 +213,7 @@ GEM
     parallel (1.21.0)
     parser (3.0.3.2)
       ast (~> 2.4.1)
-    pg (1.4.6)
+    pg (1.5.9)
     pry (0.14.1)
       coderay (~> 1.1)
       method_source (~> 1.0)
@@ -373,7 +373,7 @@ DEPENDENCIES
   jbuilder
   listen
   notifications-ruby-client
-  pg (< 1.5)
+  pg (< 1.6)
   pry
   puma
   rails (< 7.0)