Revert "Bump sidekiq from 6.5.5 to 7.0.8"

This reverts commit 88e29a0.

Author: drusepth

Gemfile.lock

@@ -1294,7 +1294,7 @@ GEM
       execjs
     coffee-script-source (1.12.2)
     concurrent-ruby (1.2.0)
-    connection_pool (2.4.0)
+    connection_pool (2.3.0)
     crass (1.0.6)
     csv (3.2.6)
     d3-rails (5.9.2)
@@ -1515,7 +1515,7 @@ GEM
     pundit (2.2.0)
       activesupport (>= 3.0.0)
     racc (1.6.2)
-    rack (2.2.6.4)
+    rack (2.2.6.2)
     rack-mini-profiler (3.0.0)
       rack (>= 1.2.0)
     rack-proxy (0.7.6)
@@ -1573,7 +1573,7 @@ GEM
     redcarpet (3.6.0)
     redis (5.0.5)
       redis-client (>= 0.9.0)
-    redis-client (0.14.1)
+    redis-client (0.10.0)
       connection_pool
     responders (3.0.1)
       actionpack (>= 5.0)
@@ -1609,11 +1609,10 @@ GEM
       rubyzip (>= 1.2.2, < 3.0)
       websocket (~> 1.0)
     semantic_range (3.0.0)
-    sidekiq (7.0.8)
-      concurrent-ruby (< 2)
-      connection_pool (>= 2.3.0)
-      rack (>= 2.2.4)
-      redis-client (>= 0.11.0)
+    sidekiq (6.5.5)
+      connection_pool (>= 2.2.2)
+      rack (~> 2.0)
+      redis (>= 4.5.0)
     simplecov (0.13.0)
       docile (~> 1.1.0)
       json (>= 1.8, < 3)