Bump sentry-sidekiq from 5.14.0 to 5.15.0

Bumps [sentry-sidekiq](https://github.com/getsentry/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-sidekiq
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Gemfile.lock

@@ -576,13 +576,13 @@ GEM
     ruby-progressbar (1.13.0)
     ruby2_keywords (0.0.5)
     rubyzip (2.3.2)
-    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)
-    sentry-sidekiq (5.14.0)
-      sentry-ruby (~> 5.14.0)
+    sentry-sidekiq (5.15.0)
+      sentry-ruby (~> 5.15.0)
       sidekiq (>= 3.0)
     set (1.0.3)
     sidekiq (6.5.12)