Bump bugsnag from 6.18.0 to 6.19.0 (#517)

Bumps [bugsnag](https://github.com/bugsnag/bugsnag-ruby) from 6.18.0 to 6.19.0.
- [Release notes](https://github.com/bugsnag/bugsnag-ruby/releases)
- [Changelog](https://github.com/bugsnag/bugsnag-ruby/blob/master/CHANGELOG.md)
- [Commits](bugsnag/bugsnag-ruby@v6.18.0...v6.19.0)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Author: dependabot-preview[bot]

Gemfile.lock

@@ -80,7 +80,7 @@ GEM
       autoprefixer-rails (>= 9.1.0)
       popper_js (>= 1.14.3, < 2)
       sassc-rails (>= 2.0.0)
-    bugsnag (6.18.0)
+    bugsnag (6.19.0)
       concurrent-ruby (~> 1.0)
     builder (3.2.4)
     byebug (11.1.3)