Bump sinatra from 2.2.0 to 2.2.3 (#125)

Bumps [sinatra](https://github.com/sinatra/sinatra) from 2.2.0 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@v2.2.0...v2.2.3)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Gemfile.lock

@@ -72,7 +72,7 @@ GEM
     multi_json (1.15.0)
     multi_xml (0.6.0)
     multipart-post (2.1.1)
-    mustermann (1.1.1)
+    mustermann (2.0.2)
       ruby2_keywords (~> 0.0.1)
     naught (1.1.0)
     nio4r (2.5.8)
@@ -91,7 +91,7 @@ GEM
       nio4r (~> 2.0)
     racc (1.6.0)
     rack (2.2.4)
-    rack-protection (2.2.0)
+    rack-protection (2.2.3)
       rack
     rack-rewrite (1.5.1)
     rack-test (1.1.0)
@@ -113,16 +113,16 @@ GEM
     simple_oauth (0.3.1)
     simpleidn (0.2.1)
       unf (~> 0.1.4)
-    sinatra (2.2.0)
-      mustermann (~> 1.0)
+    sinatra (2.2.3)
+      mustermann (~> 2.0)
       rack (~> 2.2)
-      rack-protection (= 2.2.0)
+      rack-protection (= 2.2.3)
       tilt (~> 2.0)
-    sinatra-contrib (2.2.0)
+    sinatra-contrib (2.2.3)
       multi_json
-      mustermann (~> 1.0)
-      rack-protection (= 2.2.0)
-      sinatra (= 2.2.0)
+      mustermann (~> 2.0)
+      rack-protection (= 2.2.3)
+      sinatra (= 2.2.3)
       tilt (~> 2.0)
     sinatra-portier (2.0)
       addressable (>= 2.8)
@@ -148,7 +148,7 @@ GEM
     thread (0.2.2)
     thread_safe (0.3.6)
     throttle-queue (0.2.0)
-    tilt (2.0.10)
+    tilt (2.0.11)
     to_regexp (0.2.1)
     twitter (7.0.0)
       addressable (~> 2.3)