Bump @sentry/tracing from 7.36.0 to 7.120.3 in /backend

Bumps [@sentry/tracing](https://github.com/getsentry/sentry-javascript) from 7.36.0 to 7.120.3.
- [Release notes](https://github.com/getsentry/sentry-javascript/releases)
- [Changelog](https://github.com/getsentry/sentry-javascript/blob/7.120.3/CHANGELOG.md)
- [Commits](getsentry/sentry-javascript@7.36.0...7.120.3)

---
updated-dependencies:
- dependency-name: "@sentry/tracing"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]