Update sinatra to version 4.2.1

Author: depfu[bot]

Gemfile.lock

@@ -1,7 +1,7 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    base64 (0.2.0)
+    base64 (0.3.0)
     bigdecimal (3.1.9)
     csv (3.3.3)
     google-protobuf (4.30.1)
@@ -13,9 +13,9 @@ GEM
     googleapis-common-protos-types (1.19.0)
       google-protobuf (>= 3.18, < 5.a)
     json (2.10.2)
-    logger (1.6.6)
+    logger (1.7.0)
     mini_portile2 (2.8.8)
-    mustermann (3.0.3)
+    mustermann (3.0.4)
       ruby2_keywords (~> 0.0.1)
     nio4r (2.7.4)
     nokogiri (1.18.6)
@@ -62,14 +62,14 @@ GEM
     puma (6.6.0)
       nio4r (~> 2.0)
     racc (1.8.1)
-    rack (3.1.12)
+    rack (3.2.3)
     rack-cors (2.0.2)
       rack (>= 2.0.0)
-    rack-protection (4.1.1)
+    rack-protection (4.2.1)
       base64 (>= 0.1.0)
       logger (>= 1.6.0)
       rack (>= 3.0.0, < 4)
-    rack-session (2.1.0)
+    rack-session (2.1.1)
       base64 (>= 0.1.0)
       rack (>= 3.0.0)
     rackup (2.2.1)
@@ -78,14 +78,14 @@ GEM
     ruby2_keywords (0.0.5)
     shotgun (0.9.2)
       rack (>= 1.0)
-    sinatra (4.1.1)
+    sinatra (4.2.1)
       logger (>= 1.6.0)
       mustermann (~> 3.0)
       rack (>= 3.0.0, < 4)
-      rack-protection (= 4.1.1)
+      rack-protection (= 4.2.1)
       rack-session (>= 2.0.0, < 3)
       tilt (~> 2.0)
-    tilt (2.6.0)
+    tilt (2.6.1)
 
 PLATFORMS
   powerpc64le-linux