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

Author: renovate[bot]

Gemfile

@@ -1,5 +1,5 @@
 source 'https://rubygems.org'
-ruby '3.4.1'
+ruby '3.3.6'
 
 gem 'activesupport', require: false
 gem 'html-pipeline'

Gemfile.lock

@@ -137,7 +137,7 @@ GEM
       eventmachine (~> 1.0, >= 1.0.4)
       rack (>= 1, < 3)
     thor (1.3.2)
-    tilt (2.5.0)
+    tilt (2.6.0)
     tty-pager (0.14.0)
       strings (~> 0.2.0)
       tty-screen (~> 0.8)
@@ -191,7 +191,7 @@ DEPENDENCIES
   yajl-ruby
 
 RUBY VERSION
-   ruby 3.4.1p0
+   ruby 3.3.6p108
 
 BUNDLED WITH
    2.4.6