Update RuboCop to v0.90

Signed-off-by: NUtkarsh Gupta <utkarsh@debian.org>

.rubocop.yml

 require:
+  - rubocop-packaging
   - rubocop-performance
   - rubocop-rails
 

Gemfile

@@ -29,7 +29,8 @@ gem "uglifier", ">= 1.3.0", require: false
 gem "json", ">= 2.0.0"
 
 group :rubocop do
-  gem "rubocop", ">= 0.47", require: false
+  gem "rubocop", ">= 0.90", require: false
+  gem "rubocop-packaging", require: false
   gem "rubocop-performance", require: false
   gem "rubocop-rails", require: false
 end

Gemfile.lock

@@ -115,7 +115,7 @@ GEM
       public_suffix (>= 2.0.2, < 5.0)
     amq-protocol (2.3.0)
     ansi (1.5.0)
-    ast (2.4.0)
+    ast (2.4.1)
     aws-eventstream (1.0.3)
     aws-partitions (1.260.0)
     aws-sdk-core (3.86.0)
@@ -282,8 +282,6 @@ GEM
     image_processing (1.10.2)
       mini_magick (>= 4.9.5, < 5)
       ruby-vips (>= 2.0.17, < 3)
-    jaro_winkler (1.5.4)
-    jaro_winkler (1.5.4-java)
     jdbc-mysql (5.1.47)
     jdbc-postgres (42.2.6)
     jdbc-sqlite3 (3.28.0)
@@ -346,9 +344,9 @@ GEM
     nokogiri (1.10.9-x86-mingw32)
       mini_portile2 (~> 2.4.0)
     os (1.0.1)
-    parallel (1.19.1)
-    parser (2.7.1.2)
-      ast (~> 2.4.0)
+    parallel (1.19.2)
+    parser (2.7.1.4)
+      ast (~> 2.4.1)
     path_expander (1.1.0)
     pg (1.2.3)
     pg (1.2.3-x64-mingw32)
@@ -389,7 +387,7 @@ GEM
     redis (4.2.0)
     redis-namespace (1.7.0)
       redis (>= 3.0.4)
-    regexp_parser (1.6.0)
+    regexp_parser (1.7.1)
     representable (3.0.4)
       declarative (< 0.1.0)
       declarative-option (< 0.2.0)
@@ -408,14 +406,17 @@ GEM
     retriable (3.1.2)
     rexml (3.2.4)
     rouge (3.20.0)
-    rubocop (0.82.0)
-      jaro_winkler (~> 1.5.1)
+    rubocop (0.90.0)
       parallel (~> 1.10)
-      parser (>= 2.7.0.1)
+      parser (>= 2.7.1.1)
       rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.7)
       rexml
+      rubocop-ast (>= 0.3.0, < 1.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 2.0)
+    rubocop-ast (0.3.0)
+      parser (>= 2.7.1.4)
     rubocop-performance (1.6.1)
       rubocop (>= 0.71.0)
     rubocop-rails (2.5.2)
@@ -587,7 +588,7 @@ DEPENDENCIES
   resque-scheduler
   rexml
   rouge
-  rubocop (>= 0.47)
+  rubocop (>= 0.90)
   rubocop-performance
   rubocop-rails
   sass-rails