Bump rails to latest patch version

It really needs bumping to 6.1.x eventually, but this is a step in the
[upgrade process](https://edgeguides.rubyonrails.org/upgrading_ruby_on_rails.html#the-upgrade-process)

Author: sihugh

Gemfile

@@ -1,6 +1,6 @@
 source "https://rubygems.org"
 
-gem "rails", "6.0.3.6"
+gem "rails", "6.0.3.7"
 
 gem "dalli"
 gem "gds-api-adapters"

Gemfile.lock

@@ -1,56 +1,56 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    actioncable (6.0.3.6)
-      actionpack (= 6.0.3.6)
+    actioncable (6.0.3.7)
+      actionpack (= 6.0.3.7)
       nio4r (~> 2.0)
       websocket-driver (>= 0.6.1)
-    actionmailbox (6.0.3.6)
-      actionpack (= 6.0.3.6)
-      activejob (= 6.0.3.6)
-      activerecord (= 6.0.3.6)
-      activestorage (= 6.0.3.6)
-      activesupport (= 6.0.3.6)
+    actionmailbox (6.0.3.7)
+      actionpack (= 6.0.3.7)
+      activejob (= 6.0.3.7)
+      activerecord (= 6.0.3.7)
+      activestorage (= 6.0.3.7)
+      activesupport (= 6.0.3.7)
       mail (>= 2.7.1)
-    actionmailer (6.0.3.6)
-      actionpack (= 6.0.3.6)
-      actionview (= 6.0.3.6)
-      activejob (= 6.0.3.6)
+    actionmailer (6.0.3.7)
+      actionpack (= 6.0.3.7)
+      actionview (= 6.0.3.7)
+      activejob (= 6.0.3.7)
       mail (~> 2.5, >= 2.5.4)
       rails-dom-testing (~> 2.0)
-    actionpack (6.0.3.6)
-      actionview (= 6.0.3.6)
-      activesupport (= 6.0.3.6)
+    actionpack (6.0.3.7)
+      actionview (= 6.0.3.7)
+      activesupport (= 6.0.3.7)
       rack (~> 2.0, >= 2.0.8)
       rack-test (>= 0.6.3)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.2.0)
-    actiontext (6.0.3.6)
-      actionpack (= 6.0.3.6)
-      activerecord (= 6.0.3.6)
-      activestorage (= 6.0.3.6)
-      activesupport (= 6.0.3.6)
+    actiontext (6.0.3.7)
+      actionpack (= 6.0.3.7)
+      activerecord (= 6.0.3.7)
+      activestorage (= 6.0.3.7)
+      activesupport (= 6.0.3.7)
       nokogiri (>= 1.8.5)
-    actionview (6.0.3.6)
-      activesupport (= 6.0.3.6)
+    actionview (6.0.3.7)
+      activesupport (= 6.0.3.7)
       builder (~> 3.1)
       erubi (~> 1.4)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.1, >= 1.2.0)
-    activejob (6.0.3.6)
-      activesupport (= 6.0.3.6)
+    activejob (6.0.3.7)
+      activesupport (= 6.0.3.7)
       globalid (>= 0.3.6)
-    activemodel (6.0.3.6)
-      activesupport (= 6.0.3.6)
-    activerecord (6.0.3.6)
-      activemodel (= 6.0.3.6)
-      activesupport (= 6.0.3.6)
-    activestorage (6.0.3.6)
-      actionpack (= 6.0.3.6)
-      activejob (= 6.0.3.6)
-      activerecord (= 6.0.3.6)
+    activemodel (6.0.3.7)
+      activesupport (= 6.0.3.7)
+    activerecord (6.0.3.7)
+      activemodel (= 6.0.3.7)
+      activesupport (= 6.0.3.7)
+    activestorage (6.0.3.7)
+      actionpack (= 6.0.3.7)
+      activejob (= 6.0.3.7)
+      activerecord (= 6.0.3.7)
       marcel (~> 1.0.0)
-    activesupport (6.0.3.6)
+    activesupport (6.0.3.7)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
@@ -215,20 +215,20 @@ GEM
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rack_strip_client_ip (0.0.2)
-    rails (6.0.3.6)
-      actioncable (= 6.0.3.6)
-      actionmailbox (= 6.0.3.6)
-      actionmailer (= 6.0.3.6)
-      actionpack (= 6.0.3.6)
-      actiontext (= 6.0.3.6)
-      actionview (= 6.0.3.6)
-      activejob (= 6.0.3.6)
-      activemodel (= 6.0.3.6)
-      activerecord (= 6.0.3.6)
-      activestorage (= 6.0.3.6)
-      activesupport (= 6.0.3.6)
+    rails (6.0.3.7)
+      actioncable (= 6.0.3.7)
+      actionmailbox (= 6.0.3.7)
+      actionmailer (= 6.0.3.7)
+      actionpack (= 6.0.3.7)
+      actiontext (= 6.0.3.7)
+      actionview (= 6.0.3.7)
+      activejob (= 6.0.3.7)
+      activemodel (= 6.0.3.7)
+      activerecord (= 6.0.3.7)
+      activestorage (= 6.0.3.7)
+      activesupport (= 6.0.3.7)
       bundler (>= 1.3.0)
-      railties (= 6.0.3.6)
+      railties (= 6.0.3.7)
       sprockets-rails (>= 2.0.0)
     rails-controller-testing (1.0.5)
       actionpack (>= 5.0.1.rc1)
@@ -245,9 +245,9 @@ GEM
     rails_translation_manager (0.1.0)
       activesupport
       rails-i18n
-    railties (6.0.3.6)
-      actionpack (= 6.0.3.6)
-      activesupport (= 6.0.3.6)
+    railties (6.0.3.7)
+      actionpack (= 6.0.3.7)
+      activesupport (= 6.0.3.7)
       method_source
       rake (>= 0.8.7)
       thor (>= 0.20.3, < 2.0)
@@ -393,7 +393,7 @@ DEPENDENCIES
   plek
   pry
   rack_strip_client_ip
-  rails (= 6.0.3.6)
+  rails (= 6.0.3.7)
   rails-controller-testing
   rails-i18n
   rails_translation_manager