Bump pg from 1.6.1 to 1.6.3

Bumps [pg](https://github.com/ged/ruby-pg) from 1.6.1 to 1.6.3.
- [Changelog](https://github.com/ged/ruby-pg/blob/master/CHANGELOG.md)
- [Commits](ged/ruby-pg@v1.6.1...v1.6.3)

---
updated-dependencies:
- dependency-name: pg
  dependency-version: 1.6.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Gemfile

@@ -34,7 +34,7 @@ gem 'omniauth-rpi',
     tag: 'v1.3.1'
 gem 'open-uri'
 gem 'paper_trail'
-gem 'pg', '~> 1.1'
+gem 'pg', '~> 1.6'
 gem 'postmark-rails'
 gem 'puma', '~> 7.2'
 gem 'rack-cors'

Gemfile.lock

@@ -336,9 +336,9 @@ GEM
     parser (3.3.9.0)
       ast (~> 2.4.1)
       racc
-    pg (1.6.1-aarch64-linux)
-    pg (1.6.1-arm64-darwin)
-    pg (1.6.1-x86_64-linux)
+    pg (1.6.3-aarch64-linux)
+    pg (1.6.3-arm64-darwin)
+    pg (1.6.3-x86_64-linux)
     postmark (1.25.1)
       json
     postmark-rails (0.22.1)
@@ -625,7 +625,7 @@ DEPENDENCIES
   omniauth-rpi!
   open-uri
   paper_trail
-  pg (~> 1.1)
+  pg (~> 1.6)
   postmark-rails
   pry-byebug
   puma (~> 7.2)