Bump @sentry/browser from 5.14.2 to 5.15.0

Bumps [@sentry/browser](https://github.com/getsentry/sentry-javascript) from 5.14.2 to 5.15.0.
- [Release notes](https://github.com/getsentry/sentry-javascript/releases)
- [Changelog](https://github.com/getsentry/sentry-javascript/blob/master/CHANGELOG.md)
- [Commits](https://github.com/getsentry/sentry-javascript/compare/5.14.2...5.15.0)

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

package.json

@@ -2,7 +2,7 @@
   "dependencies": {
     "@fortawesome/fontawesome-free": "^5.12.1",
     "@rails/webpacker": "4.2",
-    "@sentry/browser": "^5.14.2",
+    "@sentry/browser": "^5.15.0",
     "bootstrap": "^4.1.3",
     "bootswatch": "^4.4.1",
     "chosen-js": "^1.8.7",