Bump rubocop from 0.32.1 to 0.48.1

Bumps [rubocop](https://github.com/rubocop-hq/rubocop) from 0.32.1 to 0.48.1.
- [Release notes](https://github.com/rubocop-hq/rubocop/releases)
- [Changelog](https://github.com/rubocop-hq/rubocop/blob/master/CHANGELOG.md)
- [Commits](rubocop/rubocop@v0.32.1...v0.48.1)

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile

@@ -4,7 +4,7 @@ gem 'collimator', '0.0.3'
 gem 'mcollective-client', '2.8.2'
 gem 'puppet', '3.7.5'
 gem 'rspec', '3.3.0' # used by stacks test command
-gem 'rubocop', '0.32.1'
+gem 'rubocop', '0.48.1'
 
 group :development do
   gem 'ci_reporter_rspec', '1.0.0'

Gemfile.lock

@@ -3,8 +3,6 @@ GEM
   specs:
     CFPropertyList (2.3.6)
     ast (2.4.0)
-    astrolabe (1.3.1)
-      parser (~> 2.2)
     builder (3.2.4)
     byebug (9.0.6)
     ci_reporter (2.0.0)
@@ -29,7 +27,7 @@ GEM
       stomp
       systemu
     method_source (0.9.2)
-    parser (2.7.0.2)
+    parser (2.7.1.1)
       ast (~> 2.4.0)
     powerpack (0.1.2)
     pry (0.12.2)
@@ -58,17 +56,18 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.3.0)
     rspec-support (3.3.0)
-    rubocop (0.32.1)
-      astrolabe (~> 1.3)
-      parser (>= 2.2.2.5, < 3.0)
+    rubocop (0.48.1)
+      parser (>= 2.3.3.1, < 3.0)
       powerpack (~> 0.1)
       rainbow (>= 1.99.1, < 3.0)
-      ruby-progressbar (~> 1.4)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (~> 1.0, >= 1.0.1)
     ruby-progressbar (1.10.1)
     stomp (1.4.9)
     syck (1.4.0)
     sync (0.5.0)
     systemu (2.6.5)
+    unicode-display_width (1.7.0)
 
 PLATFORMS
   ruby
@@ -84,7 +83,7 @@ DEPENDENCIES
   puppet (= 3.7.5)
   rake (= 10.1.0)
   rspec (= 3.3.0)
-  rubocop (= 0.32.1)
+  rubocop (= 0.48.1)
   syck
   sync