Merge pull request #2128 from codebar/dependabot/bundler/pg-1.5.9

Bump pg from 1.5.4 to 1.5.9

Author: gnclmorais

Gemfile.lock

@@ -275,7 +275,7 @@ GEM
     parser (3.3.3.0)
       ast (~> 2.4.1)
       racc
-    pg (1.5.4)
+    pg (1.5.9)
     pickadate-rails (3.5.6.0)
       railties (>= 3.1.0)
     popper_js (2.11.8)