Revert "Merge pull request #2753 from rubygems/dependabot/bundler/ela…

…sticsearch-rails-7.2.0"

This reverts commit 14469cb, reversing
changes made to 50f05ef.
Fixes: elastic/elasticsearch-rails#1004

Gemfile.lock

@@ -148,7 +148,7 @@ GEM
       activesupport (> 3)
       elasticsearch (> 1)
       hashie
-    elasticsearch-rails (7.2.0)
+    elasticsearch-rails (7.1.1)
     elasticsearch-transport (7.5.0)
       faraday (>= 0.14, < 1)
       multi_json