chore(deps): update dependency sinatra to v4 [security]

Author: renovate[bot]

Gemfile.lock

@@ -52,10 +52,14 @@ GEM
     pry (0.14.2)
       coderay (~> 1.1)
       method_source (~> 1.0)
-    rack (2.2.9)
-    rack-protection (3.2.0)
+    rack (3.1.12)
+    rack-protection (4.1.1)
       base64 (>= 0.1.0)
-      rack (~> 2.2, >= 2.2.4)
+      logger (>= 1.6.0)
+      rack (>= 3.0.0, < 4)
+    rack-session (2.1.0)
+      base64 (>= 0.1.0)
+      rack (>= 3.0.0)
     rack-test (2.1.0)
       rack (>= 1.3)
     rb-fsevent (0.11.2)
@@ -76,14 +80,16 @@ GEM
     rspec-support (3.13.1)
     ruby2_keywords (0.0.5)
     shellany (0.0.1)
-    sinatra (3.2.0)
+    sinatra (4.1.1)
+      logger (>= 1.6.0)
       mustermann (~> 3.0)
-      rack (~> 2.2, >= 2.2.4)
-      rack-protection (= 3.2.0)
+      rack (>= 3.0.0, < 4)
+      rack-protection (= 4.1.1)
+      rack-session (>= 2.0.0, < 3)
       tilt (~> 2.0)
     sorbet-runtime (0.5.11572)
     thor (1.3.2)
-    tilt (2.4.0)
+    tilt (2.6.0)
     tttls1.3 (0.3.3)
       ech_config (~> 0.0.3)
       hpke