update sinatra

Gemfile.lock

@@ -33,7 +33,7 @@ GEM
       rb-inotify (~> 0.9, >= 0.9.10)
     method_source (1.0.0)
     minitest (5.14.4)
-    mustermann (1.1.1)
+    mustermann (3.0.0)
       ruby2_keywords (~> 0.0.1)
     parallel (1.21.0)
     parser (3.0.3.2)
@@ -42,8 +42,8 @@ GEM
     pry (0.14.1)
       coderay (~> 1.1)
       method_source (~> 1.0)
-    rack (2.2.3.1)
-    rack-protection (2.2.0)
+    rack (2.2.4)
+    rack-protection (3.0.4)
       rack
     rainbow (3.0.0)
     rake (13.0.6)
@@ -81,10 +81,10 @@ GEM
     ruby-progressbar (1.11.0)
     ruby2_keywords (0.0.5)
     set (1.0.3)
-    sinatra (2.2.0)
-      mustermann (~> 1.0)
-      rack (~> 2.2)
-      rack-protection (= 2.2.0)
+    sinatra (3.0.4)
+      mustermann (~> 3.0)
+      rack (~> 2.2, >= 2.2.4)
+      rack-protection (= 3.0.4)
       tilt (~> 2.0)
     sorted_set (1.0.3)
       rbtree
@@ -101,7 +101,7 @@ GEM
       terminal-table (>= 2, < 4)
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)
-    tilt (2.0.10)
+    tilt (2.0.11)
     timecop (0.9.4)
     typeprof (0.20.4)
       rbs (>= 1.6.2)