Bump pg from 1.5.9 to 1.6.1

Bumps [pg](https://github.com/ged/ruby-pg) from 1.5.9 to 1.6.1.
- [Changelog](https://github.com/ged/ruby-pg/blob/master/CHANGELOG.md)
- [Commits](ged/ruby-pg@v1.5.9...v1.6.1)

---
updated-dependencies:
- dependency-name: pg
  dependency-version: 1.6.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Gemfile

@@ -42,7 +42,7 @@ gem "bootsnap", require: false
 gem "activeresource"
 
 # Use postgresql as the database for Active Record
-gem "pg", "~> 1.5"
+gem "pg", "~> 1.6"
 
 # For GOV.UK branding
 gem "govuk-components"

Gemfile.lock

@@ -305,7 +305,13 @@ GEM
     parser (3.3.8.0)
       ast (~> 2.4.1)
       racc
-    pg (1.5.9)
+    pg (1.6.1)
+    pg (1.6.1-aarch64-linux)
+    pg (1.6.1-aarch64-linux-musl)
+    pg (1.6.1-arm64-darwin)
+    pg (1.6.1-x86_64-darwin)
+    pg (1.6.1-x86_64-linux)
+    pg (1.6.1-x86_64-linux-musl)
     pp (0.6.2)
       prettyprint
     prettyprint (0.2.0)
@@ -541,7 +547,7 @@ DEPENDENCIES
   govuk_notify_rails
   i18n-tasks (~> 1.0.15)
   lograge
-  pg (~> 1.5)
+  pg (~> 1.6)
   puma (~> 6.6.1)
   rails (= 8.0.2.1)
   rails-controller-testing