Bump semver, @pm2/agent and @pm2/io in /traffic_portal/app/src (#7989)

Bumps [semver](https://github.com/npm/node-semver), @pm2/agent and [@pm2/io](https://github.com/keymetrics/pm2-io-apm). These dependencies needed to be updated together.

Updates `semver` from 7.2.3 to 7.5.4
- [Release notes](https://github.com/npm/node-semver/releases)
- [Changelog](https://github.com/npm/node-semver/blob/main/CHANGELOG.md)
- [Commits](npm/node-semver@v7.2.3...v7.5.4)

Updates `@pm2/agent` from 2.0.1 to 2.0.3

Updates `@pm2/io` from 5.0.0 to 5.0.2
- [Release notes](https://github.com/keymetrics/pm2-io-apm/releases)
- [Changelog](https://github.com/keymetrics/pm2-io-apm/blob/master/CHANGELOG.md)
- [Commits](keymetrics/pm2-io-apm@5.0.0...v5.0.2)

---
updated-dependencies:
- dependency-name: semver
  dependency-type: indirect
- dependency-name: "@pm2/agent"
  dependency-type: indirect
- dependency-name: "@pm2/io"
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>