Bump rubocop from 1.18.2 to 1.25.1

Gemfile.lock

@@ -5,11 +5,11 @@ GEM
     bosh-template (2.2.1)
       semi_semantic (~> 1.2.0)
     diff-lcs (1.4.4)
-    parallel (1.20.1)
-    parser (3.0.1.1)
+    parallel (1.21.0)
+    parser (3.1.0.0)
       ast (~> 2.4.1)
-    rainbow (3.0.0)
-    regexp_parser (2.1.1)
+    rainbow (3.1.1)
+    regexp_parser (2.2.0)
     rexml (3.2.5)
     rspec (3.10.0)
       rspec-core (~> 3.10.0)
@@ -24,20 +24,20 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.10.0)
     rspec-support (3.10.2)
-    rubocop (1.18.2)
+    rubocop (1.25.1)
       parallel (~> 1.10)
-      parser (>= 3.0.0.0)
+      parser (>= 3.1.0.0)
       rainbow (>= 2.2.2, < 4.0)
       regexp_parser (>= 1.8, < 3.0)
       rexml
-      rubocop-ast (>= 1.7.0, < 2.0)
+      rubocop-ast (>= 1.15.1, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 3.0)
-    rubocop-ast (1.7.0)
+    rubocop-ast (1.15.1)
       parser (>= 3.0.1.1)
     ruby-progressbar (1.11.0)
     semi_semantic (1.2.0)
-    unicode-display_width (2.0.0)
+    unicode-display_width (2.1.0)
 
 PLATFORMS
   ruby