Bump sentry-rails and sentry-ruby

Bumps [sentry-rails](https://github.com/getsentry/sentry-ruby) and [sentry-ruby](https://github.com/getsentry/sentry-ruby). These dependencies needed to be updated together.

Updates `sentry-rails` from 5.14.0 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@5.14.0...5.15.0)

Updates `sentry-ruby` from 5.14.0 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@5.14.0...5.15.0)

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

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

Gemfile.lock

@@ -464,10 +464,10 @@ GEM
       rubocop-factory_bot (~> 2.22)
     ruby-progressbar (1.13.0)
     ruby2_keywords (0.0.5)
-    sentry-rails (5.14.0)
+    sentry-rails (5.15.0)
       railties (>= 5.0)
-      sentry-ruby (~> 5.14.0)
-    sentry-ruby (5.14.0)
+      sentry-ruby (~> 5.15.0)
+    sentry-ruby (5.15.0)
       concurrent-ruby (~> 1.0, >= 1.0.2)
     shoulda-matchers (5.3.0)
       activesupport (>= 5.2.0)