Bump pg from 1.3.5 to 1.5.4

Bumps [pg](https://github.com/ged/ruby-pg) from 1.3.5 to 1.5.4.
- [Changelog](https://github.com/ged/ruby-pg/blob/master/History.md)
- [Commits](ged/ruby-pg@v1.3.5...v1.5.4)

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

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

Gemfile

@@ -46,7 +46,7 @@ gem 'omniauth-rails_csrf_protection'
 gem 'omniauth-shibboleth', '~> 1.3'
 gem 'passenger', '6.0.14', require: 'phusion_passenger/rack_handler'
 # Use postgresql as the database for Active Record
-gem 'pg', '~> 1.3.5'
+gem 'pg', '~> 1.5.4'
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
 gem 'rails', '~> 6.0'
 # Use Redis adapter to run Action Cable in production

Gemfile.lock

@@ -700,7 +700,7 @@ GEM
     passenger (6.0.14)
       rack
       rake (>= 0.8.1)
-    pg (1.3.5)
+    pg (1.5.4)
     popper_js (1.16.1)
     posix-spawn (0.3.15)
     psych (3.3.4)
@@ -1114,7 +1114,7 @@ DEPENDENCIES
   omniauth-rails_csrf_protection
   omniauth-shibboleth (~> 1.3)
   passenger (= 6.0.14)
-  pg (~> 1.3.5)
+  pg (~> 1.5.4)
   puma
   rails (~> 6.0)
   redis (~> 4.5.0)