update sinatra because of: Security Fix CVE-2018-11627

Gemfile

@@ -2,8 +2,8 @@ source "https://rubygems.org"
 
 ruby ">= 2.2.8", "< 2.5.0"
 
-gem "sinatra", "~> 2.0.1"
-gem "sinatra-contrib", "~> 2.0.1"
+gem "sinatra", "~> 2.0.3"
+gem "sinatra-contrib", "~> 2.0.3"
 gem "unicorn"
 gem "json"
 

Gemfile.lock

@@ -1,12 +1,20 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    backports (3.11.1)
+    activesupport (5.2.0)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
+      i18n (>= 0.7, < 2)
+      minitest (~> 5.1)
+      tzinfo (~> 1.1)
+    backports (3.11.3)
     chunky_png (1.3.8)
+    concurrent-ruby (1.0.5)
     djinni (2.2.0)
       fagin (~> 1.0, >= 1.0.3)
     fagin (1.1.2)
     hilighter (1.2.2)
+    i18n (1.0.1)
+      concurrent-ruby (~> 1.0)
     json (2.1.0)
     json_config (0.1.3)
     jwt (2.1.0)
@@ -16,8 +24,8 @@ GEM
     mustermann (1.0.2)
     os (1.0.0)
     pbkdf2-ruby (0.2.1)
-    rack (2.0.4)
-    rack-protection (2.0.1)
+    rack (2.0.5)
+    rack-protection (2.0.3)
       rack
     rack-test (0.7.0)
       rack (>= 1.0, < 3)
@@ -35,20 +43,24 @@ GEM
       scoobydoo (~> 0.1, >= 0.1.5)
     salsa20 (0.1.2)
     scoobydoo (0.1.5)
-    sinatra (2.0.1)
+    sinatra (2.0.3)
       mustermann (~> 1.0)
       rack (~> 2.0)
-      rack-protection (= 2.0.1)
+      rack-protection (= 2.0.3)
       tilt (~> 2.0)
-    sinatra-contrib (2.0.1)
-      backports (>= 2.0)
+    sinatra-contrib (2.0.3)
+      activesupport (>= 4.0.0)
+      backports (>= 2.8.2)
       multi_json
       mustermann (~> 1.0)
-      rack-protection (= 2.0.1)
-      sinatra (= 2.0.1)
+      rack-protection (= 2.0.3)
+      sinatra (= 2.0.3)
       tilt (>= 1.3, < 3)
     sqlite3 (1.3.13)
+    thread_safe (0.3.6)
     tilt (2.0.8)
+    tzinfo (1.2.5)
+      thread_safe (~> 0.1)
     unicorn (5.3.1)
       kgio (~> 2.6)
       raindrops (~> 0.7)
@@ -66,8 +78,8 @@ DEPENDENCIES
   rotp
   rqrcode
   rubeepass (~> 3.0)
-  sinatra (~> 2.0.1)
-  sinatra-contrib (~> 2.0.1)
+  sinatra (~> 2.0.3)
+  sinatra-contrib (~> 2.0.3)
   sqlite3
   unicorn