Bump sentry-ruby from 5.13.0 to 5.15.0

Bumps [sentry-ruby](https://github.com/getsentry/sentry-ruby) from 5.13.0 to 5.15.0.
- [Release notes](https://github.com/getsentry/sentry-ruby/releases)
- [Changelog](https://github.com/getsentry/sentry-ruby/blob/master/CHANGELOG.md)
- [Commits](getsentry/sentry-ruby@5.13.0...5.15.0)

---
updated-dependencies:
- dependency-name: sentry-ruby
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile

@@ -21,7 +21,7 @@ gem 'rack', '~> 2.2'
 gem 'rack-cors', '~> 2.0'
 gem 'rake', '~> 13.1'
 gem 'secure_headers', '~> 6.5'
-gem 'sentry-ruby', '~> 5.13'
+gem 'sentry-ruby', '~> 5.15'
 
 group :development do
   gem 'bundler-audit', '~> 0.9.1'

Gemfile.lock

@@ -257,7 +257,7 @@ GEM
     ruby-progressbar (1.13.0)
     ruby2_keywords (0.0.5)
     secure_headers (6.5.0)
-    sentry-ruby (5.13.0)
+    sentry-ruby (5.15.0)
       concurrent-ruby (~> 1.0, >= 1.0.2)
     shellany (0.0.1)
     simplecov (0.22.0)
@@ -314,7 +314,7 @@ DEPENDENCIES
   rubocop-rake (~> 0.6.0)
   rubocop-rspec (~> 2.25)
   secure_headers (~> 6.5)
-  sentry-ruby (~> 5.13)
+  sentry-ruby (~> 5.15)
   simplecov (~> 0.22.0)
   simplecov-cobertura (~> 2.1)
   timecop (~> 0.9.8)