Bump sinatra from 3.0.5 to 3.0.6

Bumps [sinatra](https://github.com/sinatra/sinatra) from 3.0.5 to 3.0.6.
- [Release notes](https://github.com/sinatra/sinatra/releases)
- [Changelog](https://github.com/sinatra/sinatra/blob/main/CHANGELOG.md)
- [Commits](sinatra/sinatra@v3.0.5...v3.0.6)

---
updated-dependencies:
- dependency-name: sinatra
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Gemfile.lock

@@ -54,7 +54,7 @@ GEM
     raabro (1.4.0)
     racc (1.6.2)
     rack (2.2.6.4)
-    rack-protection (3.0.5)
+    rack-protection (3.0.6)
       rack
     rack-test (2.1.0)
       rack (>= 1.3)
@@ -96,10 +96,10 @@ GEM
       simplecov_json_formatter (~> 0.1)
     simplecov-html (0.12.3)
     simplecov_json_formatter (0.1.4)
-    sinatra (3.0.5)
+    sinatra (3.0.6)
       mustermann (~> 3.0)
       rack (~> 2.2, >= 2.2.4)
-      rack-protection (= 3.0.5)
+      rack-protection (= 3.0.6)
       tilt (~> 2.0)
     temple (0.10.0)
     thin (1.8.2)