Bump sinatra from 4.0.0 to 4.1.0 in /examples/cognition (#9)

Bumps [sinatra](https://github.com/sinatra/sinatra) from 4.0.0 to 4.1.0.
- [Changelog](https://github.com/sinatra/sinatra/blob/main/CHANGELOG.md)
- [Commits](sinatra/sinatra@v4.0.0...v4.1.0)

---
updated-dependencies:
- dependency-name: sinatra
  dependency-type: direct:production
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

examples/cognition/Gemfile.lock

@@ -59,9 +59,10 @@ GEM
     ostruct (0.6.0)
     puma (6.4.3)
       nio4r (~> 2.0)
-    rack (3.1.7)
-    rack-protection (4.0.0)
+    rack (3.1.8)
+    rack-protection (4.1.0)
       base64 (>= 0.1.0)
+      logger (>= 1.6.0)
       rack (>= 3.0.0, < 4)
     rack-session (2.0.0)
       rack (>= 3.0.0)
@@ -70,10 +71,11 @@ GEM
       webrick (~> 1.8)
     ruby2_keywords (0.0.5)
     securerandom (0.3.1)
-    sinatra (4.0.0)
+    sinatra (4.1.0)
+      logger (>= 1.6.0)
       mustermann (~> 3.0)
       rack (>= 3.0.0, < 4)
-      rack-protection (= 4.0.0)
+      rack-protection (= 4.1.0)
       rack-session (>= 2.0.0, < 3)
       tilt (~> 2.0)
     sshkit (1.23.1)