Bump sinatra from 1.3.6 to 2.2.3 in /app/ruby/app-issue-creator

Bumps [sinatra](https://github.com/sinatra/sinatra) from 1.3.6 to 2.2.3.
- [Release notes](https://github.com/sinatra/sinatra/releases)
- [Changelog](https://github.com/sinatra/sinatra/blob/master/CHANGELOG.md)
- [Commits](sinatra/sinatra@1.3.6...v2.2.3)

---
updated-dependencies:
- dependency-name: sinatra
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

app/ruby/app-issue-creator/Gemfile

@@ -4,4 +4,4 @@ gem "activesupport", "~> 6.0"
 gem "json",        "~> 1.8"
 gem "jwt"
 gem "octokit"
-gem "sinatra",     "~> 1.3.5"
+gem "sinatra",     "~> 2.2.3"

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

@@ -18,21 +18,25 @@ GEM
     jwt (1.5.6)
     minitest (5.17.0)
     multipart-post (2.0.0)
+    mustermann (2.0.2)
+      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 (2.2.6.2)
+    rack-protection (2.2.3)
       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 (2.2.3)
+      mustermann (~> 2.0)
+      rack (~> 2.2)
+      rack-protection (= 2.2.3)
+      tilt (~> 2.0)
     thread_safe (0.3.6)
-    tilt (1.4.1)
+    tilt (2.1.0)
     tzinfo (1.2.11)
       thread_safe (~> 0.1)
     zeitwerk (2.6.6)
@@ -45,7 +49,7 @@ DEPENDENCIES
   json (~> 1.8)
   jwt
   octokit
-  sinatra (~> 1.3.5)
+  sinatra (~> 2.2.3)
 
 BUNDLED WITH
    1.17.1