Revert "Update Pg and MySQL2 gems in Bundle"

This reverts commit fb3edd3953ffc019ffdc21a366c734c43ca44271.

Gemfile

@@ -23,12 +23,12 @@ gem 'responders', '~> 2.0'
 # A simple, fast Mysql library for Ruby, binding to libmysql
 # (http://github.com/brianmario/mysql2)
 # A simple, fast Mysql library for Ruby, binding to libmysql (http://github.com/brianmario/mysql2)
-gem 'mysql2'
+gem 'mysql2', '~> 0.4.10'
 
 # Pg is the Ruby interface to the {PostgreSQL
 # RDBMS}[http://www.postgresql.org/](https://bitbucket.org/ged/ruby-pg)
 # Pg is the Ruby interface to the {PostgreSQL RDBMS}[http://www.postgresql.org/] (https://bitbucket.org/ged/ruby-pg)
-gem 'pg'
+gem 'pg', '~> 0.19.0'
 
 # Bit fields for ActiveRecord (https://github.com/pboling/flag_shih_tzu)
 gem 'flag_shih_tzu'  # Allows for bitfields in activereccord

Gemfile.lock

@@ -220,7 +220,7 @@ GEM
     multi_json (1.13.1)
     multi_xml (0.6.0)
     multipart-post (2.0.0)
-    mysql2 (0.5.2)
+    mysql2 (0.4.10)
     nenv (0.3.0)
     nokogiri (1.8.4)
       mini_portile2 (~> 2.3.0)
@@ -249,7 +249,7 @@ GEM
     parallel (1.12.1)
     parser (2.5.1.2)
       ast (~> 2.4.0)
-    pg (1.1.3)
+    pg (0.19.0)
     po_to_json (1.0.1)
       json (>= 1.6.0)
     powerpack (0.1.2)
@@ -471,11 +471,11 @@ DEPENDENCIES
   ledermann-rails-settings
   mini_racer
   mocha
-  mysql2
+  mysql2 (~> 0.4.10)
   omniauth
   omniauth-orcid
   omniauth-shibboleth
-  pg
+  pg (~> 0.19.0)
   progress_bar
   pundit
   rack-mini-profiler