Upgrade ruby and rubocop

.rubocop.yml

@@ -286,7 +286,7 @@ FirstMethodArgumentLineBreak:
   Enabled: false
 FirstMethodParameterLineBreak:
   Enabled: false
-FirstParameterIndentation:
+IndentFirstArgument:
   Enabled: false
 FlipFlop:
   Enabled: false
@@ -310,11 +310,11 @@ IfWithSemicolon:
   Enabled: false
 ImplicitRuntimeError:
   Enabled: false
-IndentArray:
+IndentFirstArrayElement:
   Enabled: false
 IndentAssignment:
   Enabled: false
-IndentHash:
+IndentFirstHashElement:
   Enabled: false
 IndentHeredoc:
   Enabled: false

.ruby-version

@@ -1 +1 @@
-2.5.0
+2.6.0

Gemfile

@@ -1,7 +1,7 @@
 source 'https://rubygems.org'
 
 gem 'rake'
-gem 'rubocop', '0.60.0'
+gem 'rubocop', '0.71.0'
 
 group :test do
   gem 'rspec'

Gemfile.lock

@@ -6,12 +6,11 @@ GEM
     diff-lcs (1.3)
     docile (1.1.5)
     hirb (0.7.3)
-    jaro_winkler (1.5.1)
+    jaro_winkler (1.5.3)
     json (2.1.0)
-    parallel (1.12.1)
-    parser (2.5.3.0)
+    parallel (1.17.0)
+    parser (2.6.3.0)
       ast (~> 2.4.0)
-    powerpack (0.1.2)
     rainbow (3.0.0)
     rake (12.3.0)
     rspec (3.7.0)
@@ -27,15 +26,14 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.7.0)
     rspec-support (3.7.0)
-    rubocop (0.60.0)
+    rubocop (0.71.0)
       jaro_winkler (~> 1.5.1)
       parallel (~> 1.10)
-      parser (>= 2.5, != 2.5.1.1)
-      powerpack (~> 0.1)
+      parser (>= 2.6)
       rainbow (>= 2.2.2, < 4.0)
       ruby-progressbar (~> 1.7)
-      unicode-display_width (~> 1.4.0)
-    ruby-progressbar (1.10.0)
+      unicode-display_width (>= 1.4.0, < 1.7)
+    ruby-progressbar (1.10.1)
     simplecov (0.15.1)
       docile (~> 1.1.0)
       json (>= 1.8, < 3)
@@ -45,17 +43,17 @@ GEM
       hirb
       simplecov
     simplecov-html (0.10.2)
-    unicode-display_width (1.4.0)
+    unicode-display_width (1.6.0)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
   rake
   rspec
-  rubocop (= 0.56.0)
+  rubocop (= 0.71.0)
   simplecov
   simplecov-console
 
 BUNDLED WITH
-   1.16.3
+   1.17.2