Dependency bump

Gemfile

@@ -15,6 +15,7 @@ gem 'nokogiri'
 gem 'octokit', '~> 3.0'
 gem 'poro_plus'
 gem 'pry'
+gem 'rack', ">= 2.1.6"
 gem 'rake'
 gem 'require_all'
 gem 'rspec', :group => :test

Gemfile.lock

@@ -9,7 +9,7 @@ GIT
 
 GIT
   remote: https://github.com/CoralineAda/slackbotsy
-  revision: 000b95ebdc4b6363bf88a6968b292c893d26d4bd
+  revision: c7a26e68948fcb05b0480d2e1503af6aac7f812e
   branch: add-display-name-support
   specs:
     slackbotsy (0.4.3)
@@ -175,7 +175,8 @@ GEM
       httparty (>= 0.7.3)
       mimemagic
       multipart-post
-    httparty (0.15.6)
+    httparty (0.18.1)
+      mime-types (~> 3.0)
       multi_xml (>= 0.5.2)
     httpclient (2.8.3)
     hurley (0.2)
@@ -194,7 +195,7 @@ GEM
     mime-types (3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
-    mimemagic (0.3.2)
+    mimemagic (0.3.5)
     mini_portile2 (2.4.0)
     minitest (5.14.1)
     mongo (2.4.1)
@@ -205,7 +206,9 @@ GEM
     msgpack (1.0.2)
     multi_json (1.13.1)
     multi_xml (0.6.0)
-    multipart-post (2.0.0)
+    multipart-post (2.1.1)
+    mustermann (1.1.1)
+      ruby2_keywords (~> 0.0.1)
     net-scp (1.2.1)
       net-ssh (>= 2.6.5)
     net-ssh (4.0.0)
@@ -222,10 +225,10 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)
       slop (~> 3.4)
-    rack (1.6.13)
-    rack-protection (1.5.3)
+    rack (2.2.3)
+    rack-protection (2.0.8.1)
       rack
-    rake (12.3.3)
+    rake (13.0.1)
     representable (2.3.0)
       uber (~> 0.0.7)
     require_all (1.3.3)
@@ -245,6 +248,7 @@ GEM
       rspec-support (~> 3.5.0)
     rspec-support (3.5.0)
     ruby-stemmer (0.9.6)
+    ruby2_keywords (0.0.2)
     rubyfish (0.0.6)
     sanitize (4.6.6)
       crass (~> 1.0.2)
@@ -258,17 +262,18 @@ GEM
       faraday (~> 0.9)
       jwt (>= 1.5, < 3.0)
       multi_json (~> 1.10)
-    sinatra (1.4.7)
-      rack (~> 1.5)
-      rack-protection (~> 1.4)
-      tilt (>= 1.3, < 3)
+    sinatra (2.0.8.1)
+      mustermann (~> 1.0)
+      rack (~> 2.0)
+      rack-protection (= 2.0.8.1)
+      tilt (~> 2.0)
     slop (3.6.0)
     sshkit (1.11.5)
       net-scp (>= 1.1.2)
       net-ssh (>= 2.8.0)
     stackdriver-core (0.21.0)
     thread_safe (0.3.6)
-    tilt (2.0.5)
+    tilt (2.0.10)
     tzinfo (1.2.7)
       thread_safe (~> 0.1)
     uber (0.0.15)
@@ -300,6 +305,7 @@ DEPENDENCIES
   octokit (~> 3.0)
   poro_plus
   pry
+  rack (>= 2.1.6)
   rake
   require_all
   rspec