Update Dependencies (#62)

Gemfile.lock

@@ -2,7 +2,7 @@ GEM
   remote: https://rubygems.org/
   specs:
     ast (2.4.2)
-    bcrypt (3.1.17)
+    bcrypt (3.1.18)
     daemons (1.4.1)
     eventmachine (1.2.7)
     haml (5.2.2)
@@ -14,28 +14,28 @@ GEM
       ruby2_keywords (~> 0.0.1)
     net-ldap (0.17.0)
     openssl (3.0.0)
-    parallel (1.21.0)
-    parser (3.1.1.0)
+    parallel (1.22.1)
+    parser (3.1.2.0)
       ast (~> 2.4.1)
     power_assert (2.0.1)
-    rack (2.2.3)
+    rack (2.2.3.1)
     rack-protection (2.2.0)
       rack
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rainbow (3.1.1)
-    regexp_parser (2.2.1)
+    regexp_parser (2.5.0)
     rexml (3.2.5)
-    rubocop (1.26.0)
+    rubocop (1.30.0)
       parallel (~> 1.10)
       parser (>= 3.1.0.0)
       rainbow (>= 2.2.2, < 4.0)
       regexp_parser (>= 1.8, < 3.0)
-      rexml
-      rubocop-ast (>= 1.16.0, < 2.0)
+      rexml (>= 3.2.5, < 4.0)
+      rubocop-ast (>= 1.18.0, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 3.0)
-    rubocop-ast (1.16.0)
+    rubocop-ast (1.18.0)
       parser (>= 3.1.1.0)
     ruby-progressbar (1.11.0)
     ruby2_keywords (0.0.5)