Bump rack from 2.0.7 to 2.0.8

Gemfile.lock

@@ -3,13 +3,16 @@ GEM
   specs:
     addressable (2.6.0)
       public_suffix (>= 2.0.2, < 4.0)
+    backports (3.15.0)
     connection_pool (2.2.2)
     docker-api (1.34.2)
       excon (>= 0.47.0)
       multi_json
     domain_name (0.5.20190701)
       unf (>= 0.0.5, < 1.0.0)
+    equatable (0.6.1)
     excon (0.66.0)
+    git (1.5.0)
     http (3.3.0)
       addressable (~> 2.3)
       http-cookie (~> 1.0)
@@ -30,8 +33,11 @@ GEM
     multi_json (1.13.1)
     mustermann (1.0.3)
     netrc (0.11.0)
+    pastel (0.7.3)
+      equatable (~> 0.6)
+      tty-color (~> 0.5)
     public_suffix (3.1.1)
-    rack (2.0.7)
+    rack (2.0.8)
     rack-protection (2.0.5)
       rack
     recursive-open-struct (1.1.0)
@@ -50,7 +56,17 @@ GEM
       rack (~> 2.0)
       rack-protection (= 2.0.5)
       tilt (~> 2.0)
+    sinatra-contrib (2.0.5)
+      backports (>= 2.8.2)
+      multi_json
+      mustermann (~> 1.0)
+      rack-protection (= 2.0.5)
+      sinatra (= 2.0.5)
+      tilt (>= 1.3, < 3)
     tilt (2.0.9)
+    tty-color (0.5.0)
+    tty-command (0.9.0)
+      pastel (~> 0.7.0)
     unf (0.1.4)
       unf_ext
     unf_ext (0.0.7.6)
@@ -60,10 +76,13 @@ PLATFORMS
 
 DEPENDENCIES
   docker-api
+  git
   ice_nine
   kubeclient
   sidekiq
   sinatra
+  sinatra-contrib
+  tty-command
 
 RUBY VERSION
    ruby 2.6.3p62