Restore redis gem to the bundle

There is code in shared_configs that relies on this

Gemfile

@@ -27,8 +27,6 @@ gem 'turbolinks', '~> 5'
 # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
 gem 'jbuilder', '~> 2.7'
 
-# Use Redis adapter to run Action Cable in production
-# gem 'redis', '~> 3.0'
 # Use ActiveModel has_secure_password
 # gem 'bcrypt', '~> 3.1.7'
 
@@ -137,3 +135,6 @@ gem 'acts-as-taggable-on'
 gem 'mods_display', '~> 1.0'
 gem 'slack-ruby-client'
 gem 'blacklight-oembed', '~> 1.0'
+
+# Used for shared reporting https://github.com/sul-dlss/exhibits/issues/2069
+gem 'redis', '~> 5.0'

Gemfile.lock

@@ -559,6 +559,8 @@ GEM
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     redcarpet (3.5.1)
+    redis (5.0.6)
+      redis-client (>= 0.9.0)
     redis-client (0.12.1)
       connection_pool
     regexp_parser (2.6.1)
@@ -840,6 +842,7 @@ DEPENDENCIES
   rack-mini-profiler
   rails (~> 7.0)
   rails-controller-testing
+  redis (~> 5.0)
   riiif
   rsolr
   rspec-rails