Update dependency sinatra to v4 [SECURITY]

renovate[bot] · web-flow · commit 9bb5f6a2a44f · 2025-05-22T07:00:54.000Z
diff --git a/Gemfile.lock b/Gemfile.lock
@@ -78,7 +78,7 @@ GEM
       byebug (~> 12.0)
       pry (>= 0.13, < 0.16)
     racc (1.8.1)
-    rack (2.2.15)
+    rack (2.2.16)
     rack-protection (3.2.0)
       base64 (>= 0.1.0)
       rack (~> 2.2, >= 2.2.4)
