Bump dependencies

Gemfile

@@ -1,5 +1,5 @@
 source 'https://rubygems.org'
 
-gem 'aruba', '~> 0.5.3'
-gem 'cucumber', '~> 1.3.9'
+gem 'aruba', '~> 0.5'
+gem 'cucumber', '~> 2.4'
 gem 'sinatra'

Gemfile.lock

@@ -1,50 +1,58 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    aruba (0.5.4)
-      childprocess (>= 0.3.6)
-      cucumber (>= 1.1.1)
-      rspec-expectations (>= 2.7.0)
+    aruba (0.14.11)
+      childprocess (>= 0.6.3, < 3.0.0)
+      contracts (~> 0.9)
+      cucumber (>= 1.3.19)
+      ffi (~> 1.9)
+      rspec-expectations (>= 2.99)
+      thor (~> 0.19)
     builder (3.2.3)
-    childprocess (0.9.0)
-      ffi (~> 1.0, >= 1.0.11)
-    cucumber (1.3.20)
+    childprocess (2.0.0)
+      rake (< 13.0)
+    contracts (0.16.0)
+    cucumber (2.99.0)
       builder (>= 2.1.2)
+      cucumber-core (~> 1.5.0)
+      cucumber-wire (~> 0.0.1)
       diff-lcs (>= 1.1.3)
-      gherkin (~> 2.12)
+      gherkin (~> 4.0)
       multi_json (>= 1.7.5, < 2.0)
       multi_test (>= 0.1.2)
+    cucumber-core (1.5.0)
+      gherkin (~> 4.0)
+    cucumber-wire (0.0.1)
     diff-lcs (1.3)
-    ffi (1.9.25)
-    ffi (1.9.25-java)
-    gherkin (2.12.2)
-      multi_json (~> 1.3)
-    gherkin (2.12.2-java)
-      multi_json (~> 1.3)
+    ffi (1.11.1)
+    ffi (1.11.1-java)
+    gherkin (4.1.3)
     multi_json (1.13.1)
     multi_test (0.1.2)
-    mustermann (1.0.2)
-    rack (2.0.5)
-    rack-protection (2.0.3)
+    mustermann (1.0.3)
+    rack (2.0.7)
+    rack-protection (2.0.5)
       rack
-    rspec-expectations (3.7.0)
+    rake (12.3.3)
+    rspec-expectations (3.8.4)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.7.0)
-    rspec-support (3.7.1)
-    sinatra (2.0.3)
+      rspec-support (~> 3.8.0)
+    rspec-support (3.8.2)
+    sinatra (2.0.5)
       mustermann (~> 1.0)
       rack (~> 2.0)
-      rack-protection (= 2.0.3)
+      rack-protection (= 2.0.5)
       tilt (~> 2.0)
-    tilt (2.0.8)
+    thor (0.20.3)
+    tilt (2.0.9)
 
 PLATFORMS
   java
   ruby
 
 DEPENDENCIES
-  aruba (~> 0.5.3)
-  cucumber (~> 1.3.9)
+  aruba (~> 0.5)
+  cucumber (~> 2.4)
   sinatra
 
 BUNDLED WITH