Bump sinatra and sinatra-contrib

Bumps [sinatra](https://github.com/sinatra/sinatra) and [sinatra-contrib](https://github.com/sinatra/sinatra). These dependencies needed to be updated together.

Updates `sinatra` from 3.0.6 to 3.1.0
- [Changelog](https://github.com/sinatra/sinatra/blob/main/CHANGELOG.md)
- [Commits](sinatra/sinatra@v3.0.6...v3.1.0)

Updates `sinatra-contrib` from 3.0.6 to 3.1.0
- [Changelog](https://github.com/sinatra/sinatra/blob/main/CHANGELOG.md)
- [Commits](sinatra/sinatra@v3.0.6...v3.1.0)

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

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

Gemfile.lock

@@ -59,9 +59,9 @@ GEM
  puma (6.3.0)
  nio4r (~> 2.0)
  racc (1.7.1)
- rack (2.2.7)
- rack-protection (3.0.6)
- rack
+ rack (2.2.8)
+ rack-protection (3.1.0)
+ rack (~> 2.2, >= 2.2.4)
  rack-test (2.1.0)
  rack (>= 1.3)
  rainbow (3.1.1)
@@ -115,16 +115,16 @@ GEM
  simplecov_json_formatter (~> 0.1)
  simplecov-html (0.12.3)
  simplecov_json_formatter (0.1.4)
- sinatra (3.0.6)
+ sinatra (3.1.0)
  mustermann (~> 3.0)
  rack (~> 2.2, >= 2.2.4)
- rack-protection (= 3.0.6)
+ rack-protection (= 3.1.0)
  tilt (~> 2.0)
- sinatra-contrib (3.0.6)
+ sinatra-contrib (3.1.0)
  multi_json
  mustermann (~> 3.0)
- rack-protection (= 3.0.6)
- sinatra (= 3.0.6)
+ rack-protection (= 3.1.0)
+ sinatra (= 3.1.0)
  tilt (~> 2.0)
  temple (0.10.2)
  thor (1.2.2)