fix: hooks/ruby/dismiss-review-server/Gemfile & hooks/ruby/dismiss-re…

…view-server/Gemfile.lock to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-RUBY-RACK-6274383
- https://snyk.io/vuln/SNYK-RUBY-RACK-6274384
- https://snyk.io/vuln/SNYK-RUBY-RACK-6274385

hooks/ruby/dismiss-review-server/Gemfile

@@ -1,5 +1,5 @@
 source "http://rubygems.org"
 
 gem "json",        "~> 1.8"
-gem 'sinatra',     '~> 1.3.5'
+gem 'sinatra', '~> 2.0.0'
 gem 'rest-client'

hooks/ruby/dismiss-review-server/Gemfile.lock

@@ -9,19 +9,23 @@ GEM
     mime-types (3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
+    mustermann (1.1.2)
+      ruby2_keywords (~> 0.0.1)
     netrc (0.11.0)
-    rack (1.6.13)
-    rack-protection (1.5.3)
+    rack (2.2.9)
+    rack-protection (2.0.8.1)
       rack
     rest-client (2.0.1)
       http-cookie (>= 1.0.2, < 2.0)
       mime-types (>= 1.16, < 4.0)
       netrc (~> 0.8)
-    sinatra (1.3.6)
-      rack (~> 1.4)
-      rack-protection (~> 1.3)
-      tilt (~> 1.3, >= 1.3.3)
-    tilt (1.4.1)
+    ruby2_keywords (0.0.5)
+    sinatra (2.0.8.1)
+      mustermann (~> 1.0)
+      rack (~> 2.0)
+      rack-protection (= 2.0.8.1)
+      tilt (~> 2.0)
+    tilt (2.3.0)
     unf (0.1.4)
       unf_ext
     unf_ext (0.0.7.2)
@@ -32,7 +36,7 @@ PLATFORMS
 DEPENDENCIES
   json (~> 1.8)
   rest-client
-  sinatra (~> 1.3.5)
+  sinatra (~> 2.0.0)
 
 BUNDLED WITH
-   1.14.4
+   1.17.3