Update rails gem version in bug report templates to pass CI on Ruby master

https://buildkite.com/rails/rails/builds/68834#f6a78cf3-6ae4-4148-b1c2-114ccce0731a/941-1012

guides/bug_report_templates/action_controller_gem.rb

@@ -8,7 +8,7 @@ gemfile(true) do
   git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
   # Activate the gem you are reporting the issue against.
-  gem "rails", "6.0.0"
+  gem "rails", "6.0.3"
 end
 
 require "rack/test"

guides/bug_report_templates/active_job_gem.rb

@@ -8,7 +8,7 @@ gemfile(true) do
   git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
   # Activate the gem you are reporting the issue against.
-  gem "activejob", "6.0.0"
+  gem "activejob", "6.0.3"
 end
 
 require "minitest/autorun"

guides/bug_report_templates/active_record_gem.rb

@@ -8,7 +8,7 @@ gemfile(true) do
   git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
   # Activate the gem you are reporting the issue against.
-  gem "activerecord", "6.0.0"
+  gem "activerecord", "6.0.3"
   gem "sqlite3"
 end
 

guides/bug_report_templates/active_record_migrations_gem.rb

@@ -8,7 +8,7 @@ gemfile(true) do
   git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
   # Activate the gem you are reporting the issue against.
-  gem "activerecord", "6.0.0"
+  gem "activerecord", "6.0.3"
   gem "sqlite3"
 end
 

guides/bug_report_templates/active_storage_gem.rb

@@ -8,7 +8,7 @@ gemfile(true) do
   git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
   # Activate the gem you are reporting the issue against.
-  gem "rails", "6.0.0"
+  gem "rails", "6.0.3"
   gem "sqlite3"
 end
 

guides/bug_report_templates/generic_gem.rb

@@ -8,7 +8,7 @@ gemfile(true) do
   git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
   # Activate the gem you are reporting the issue against.
-  gem "activesupport", "6.0.0"
+  gem "activesupport", "6.0.3"
 end
 
 require "active_support"