Bump the production-dependencies group across 1 directory with 7 updates

Bumps the production-dependencies group with 7 updates in the /backend directory:

| Package | From | To |
| --- | --- | --- |
| [cron](https://github.com/kelektiv/node-cron) | `3.2.1` | `3.5.0` |
| [dotenv](https://github.com/motdotla/dotenv) | `16.4.5` | `16.4.7` |
| [eventsource](https://github.com/EventSource/eventsource) | `2.0.2` | `3.0.5` |
| [express-rate-limit](https://github.com/express-rate-limit/express-rate-limit) | `7.4.1` | `7.5.0` |
| [mysql2](https://github.com/sidorares/node-mysql2) | `3.11.4` | `3.12.0` |
| [octokit](https://github.com/octokit/octokit.js) | `4.0.2` | `4.1.0` |
| [why-is-node-running](https://github.com/mafintosh/why-is-node-running) | `3.2.1` | `3.2.2` |



Updates `cron` from 3.2.1 to 3.5.0
- [Release notes](https://github.com/kelektiv/node-cron/releases)
- [Changelog](https://github.com/kelektiv/node-cron/blob/main/CHANGELOG.md)
- [Commits](kelektiv/node-cron@v3.2.1...v3.5.0)

Updates `dotenv` from 16.4.5 to 16.4.7
- [Changelog](https://github.com/motdotla/dotenv/blob/master/CHANGELOG.md)
- [Commits](motdotla/dotenv@v16.4.5...v16.4.7)

Updates `eventsource` from 2.0.2 to 3.0.5
- [Release notes](https://github.com/EventSource/eventsource/releases)
- [Changelog](https://github.com/EventSource/eventsource/blob/main/CHANGELOG.md)
- [Commits](EventSource/eventsource@v2.0.2...v3.0.5)

Updates `express-rate-limit` from 7.4.1 to 7.5.0
- [Release notes](https://github.com/express-rate-limit/express-rate-limit/releases)
- [Commits](express-rate-limit/express-rate-limit@v7.4.1...v7.5.0)

Updates `mysql2` from 3.11.4 to 3.12.0
- [Release notes](https://github.com/sidorares/node-mysql2/releases)
- [Changelog](https://github.com/sidorares/node-mysql2/blob/master/Changelog.md)
- [Commits](sidorares/node-mysql2@v3.11.4...v3.12.0)

Updates `octokit` from 4.0.2 to 4.1.0
- [Release notes](https://github.com/octokit/octokit.js/releases)
- [Commits](octokit/octokit.js@v4.0.2...v4.1.0)

Updates `why-is-node-running` from 3.2.1 to 3.2.2
- [Release notes](https://github.com/mafintosh/why-is-node-running/releases)
- [Commits](mafintosh/why-is-node-running@v3.2.1...v3.2.2)

---
updated-dependencies:
- dependency-name: cron
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: production-dependencies
- dependency-name: dotenv
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: production-dependencies
- dependency-name: eventsource
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: production-dependencies
- dependency-name: express-rate-limit
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: production-dependencies
- dependency-name: mysql2
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: production-dependencies
- dependency-name: octokit
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: production-dependencies
- dependency-name: why-is-node-running
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: production-dependencies
...

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Author: dependabot[bot]