Bump pg from 1.0.0 to 1.1.3 (#8856)

Bumps [pg](https://bitbucket.org/ged/ruby-pg) from 1.0.0 to 1.1.3.
- [Changelog](https://bitbucket.org/ged/ruby-pg/src/master/History.rdoc)
- [Commits](https://bitbucket.org/ged/ruby-pg/branches/compare/v1.1.3..v1.0.0)

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

Gemfile.lock

@@ -394,7 +394,7 @@ GEM
     pastel (0.7.2)
       equatable (~> 0.5.0)
       tty-color (~> 0.4.0)
-    pg (1.0.0)
+    pg (1.1.3)
     pghero (2.2.0)
       activerecord
     pkg-config (1.3.1)
@@ -719,7 +719,7 @@ DEPENDENCIES
   paperclip (~> 6.0)
   paperclip-av-transcoder (~> 0.6)
   parallel_tests (~> 2.21)
-  pg (~> 1.0)
+  pg (~> 1.1)
   pghero (~> 2.2)
   pkg-config (~> 1.3)
   posix-spawn!