Bump sentry-raven from 2.11.2 to 2.11.3
Bump sentry-raven from 2.11.2 to 2.11.3

Bumps [sentry-raven](https://github.com/getsentry/raven-ruby) from 2.11.2 to 2.11.3.
- [Release notes](https://github.com/getsentry/raven-ruby/releases)
- [Changelog](https://github.com/getsentry/raven-ruby/blob/master/changelog.md)
- [Commits](https://github.com/getsentry/raven-ruby/compare/v2.11.2...v2.11.3)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
jgraichen/mnemosyne-server,jgraichen/mnemosyne-server,jgraichen/mnemosyne-server