Revert "FIX: update Redis gem to version 4.1.3 (#8197)"

This reverts commit ab74a50d857c6a0ac7e5c11f9d8ddd12ee5e1805.

We really want to upgrade redis, but discovered some edge cases
around failover we need to test.

Holding off on the upgrade till a bit more testing happens

lib/freedom_patches/redis.rb

@@ -0,0 +1,16 @@
+# frozen_string_literal: true
+
+# https://github.com/redis/redis-rb/pull/591
+class Redis
+  class Client
+    alias_method :old_initialize, :initialize
+
+    def initialize(options = {})
+      old_initialize(options)
+
+      if options.include?(:connector) && options[:connector].is_a?(Class)
+        @connector = options[:connector].new(@options)
+      end
+    end
+  end
+end