fix: app/ruby/app-issue-creator/Gemfile & app/ruby/app-issue-creator/…

…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

app/ruby/app-issue-creator/Gemfile

@@ -1,7 +1,7 @@
 source "http://rubygems.org"
 
 gem "json",        "~> 1.8"
-gem 'sinatra',     '~> 1.3.5'
+gem 'sinatra', '~> 2.0.0'
 gem 'octokit'
 gem 'jwt'
 gem 'activesupport', '~> 5.0'

app/ruby/app-issue-creator/Gemfile.lock

@@ -17,21 +17,25 @@ GEM
     jwt (1.5.6)
     minitest (5.11.3)
     multipart-post (2.0.0)
+    mustermann (1.1.2)
+      ruby2_keywords (~> 0.0.1)
     octokit (4.7.0)
       sawyer (~> 0.8.0, >= 0.5.3)
     public_suffix (2.0.5)
-    rack (1.6.13)
-    rack-protection (1.5.3)
+    rack (2.2.9)
+    rack-protection (2.0.8.1)
       rack
+    ruby2_keywords (0.0.5)
     sawyer (0.8.1)
       addressable (>= 2.3.5, < 2.6)
       faraday (~> 0.8, < 1.0)
-    sinatra (1.3.6)
-      rack (~> 1.4)
-      rack-protection (~> 1.3)
-      tilt (~> 1.3, >= 1.3.3)
+    sinatra (2.0.8.1)
+      mustermann (~> 1.0)
+      rack (~> 2.0)
+      rack-protection (= 2.0.8.1)
+      tilt (~> 2.0)
     thread_safe (0.3.6)
-    tilt (1.4.1)
+    tilt (2.3.0)
     tzinfo (1.2.5)
       thread_safe (~> 0.1)
 
@@ -43,7 +47,7 @@ DEPENDENCIES
   json (~> 1.8)
   jwt
   octokit
-  sinatra (~> 1.3.5)
+  sinatra (~> 2.0.0)
 
 BUNDLED WITH
-   1.17.1
+   1.17.3