Bump rubocop-rails from 2.8.0 to 2.8.1 (activeadmin#6452)

dependabot-preview[bot] · web-flow · commit 4615b85f8233 · 2020-09-15T15:31:46.000Z
diff --git a/Gemfile.lock b/Gemfile.lock
@@ -417,7 +417,7 @@ GEM
       unicode-display_width (>= 1.4.0, < 2.0)
     rubocop-ast (0.4.0)
       parser (>= 2.7.1.4)
-    rubocop-rails (2.8.0)
+    rubocop-rails (2.8.1)
       activesupport (>= 4.2.0)
       rack (>= 1.1)
       rubocop (>= 0.87.0)
