chore(deps): update dependency sinatra to v2.2.3 [security]

Gemfile.lock

@@ -49,7 +49,7 @@ GEM
     mini_portile2 (2.8.0)
     minitest (5.14.4)
     multi_json (1.13.1)
-    mustermann (1.1.1)
+    mustermann (1.1.2)
       ruby2_keywords (~> 0.0.1)
     net-sftp (3.0.0.beta1)
       net-ssh (>= 5.0.0, < 6.0.0)
@@ -67,7 +67,7 @@ GEM
       coderay (~> 1.1)
       method_source (~> 1.0)
     racc (1.6.0)
-    rack (2.2.3.1)
+    rack (2.2.4)
     rack-protection (2.0.7)
       rack
     rack-ssl-enforcer (0.2.9)
@@ -117,7 +117,7 @@ GEM
       rack (>= 1, < 3)
     thor (0.20.3)
     thread_safe (0.3.6)
-    tilt (2.0.10)
+    tilt (2.0.11)
     tty-pager (0.12.1)
       strings (~> 0.1.4)
       tty-screen (~> 0.6)