Bump the production-dependencies group across 1 directory with 9 updates

Bumps the production-dependencies group with 9 updates in the /backend directory:

| Package | From | To |
| --- | --- | --- |
| [@octokit/core](https://github.com/octokit/core.js) | `6.1.4` | `6.1.5` |
| [cron](https://github.com/kelektiv/node-cron) | `4.1.3` | `4.3.0` |
| [dotenv](https://github.com/motdotla/dotenv) | `16.4.7` | `16.5.0` |
| [eventsource](https://github.com/EventSource/eventsource) | `3.0.6` | `3.0.7` |
| [express](https://github.com/expressjs/express) | `4.21.2` | `5.1.0` |
| [@types/express](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/express) | `4.17.21` | `5.0.1` |
| [mongoose](https://github.com/Automattic/mongoose) | `8.13.2` | `8.14.2` |
| [mysql2](https://github.com/sidorares/node-mysql2) | `3.14.0` | `3.14.1` |
| [octokit](https://github.com/octokit/octokit.js) | `4.1.2` | `4.1.3` |



Updates `@octokit/core` from 6.1.4 to 6.1.5
- [Release notes](https://github.com/octokit/core.js/releases)
- [Commits](octokit/core.js@v6.1.4...v6.1.5)

Updates `cron` from 4.1.3 to 4.3.0
- [Release notes](https://github.com/kelektiv/node-cron/releases)
- [Changelog](https://github.com/kelektiv/node-cron/blob/main/CHANGELOG.md)
- [Commits](kelektiv/node-cron@v4.1.3...v4.3.0)

Updates `dotenv` from 16.4.7 to 16.5.0
- [Changelog](https://github.com/motdotla/dotenv/blob/master/CHANGELOG.md)
- [Commits](motdotla/dotenv@v16.4.7...v16.5.0)

Updates `eventsource` from 3.0.6 to 3.0.7
- [Release notes](https://github.com/EventSource/eventsource/releases)
- [Changelog](https://github.com/EventSource/eventsource/blob/main/CHANGELOG.md)
- [Commits](EventSource/eventsource@v3.0.6...v3.0.7)

Updates `express` from 4.21.2 to 5.1.0
- [Release notes](https://github.com/expressjs/express/releases)
- [Changelog](https://github.com/expressjs/express/blob/master/History.md)
- [Commits](expressjs/express@4.21.2...v5.1.0)

Updates `@types/express` from 4.17.21 to 5.0.1
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/express)

Updates `mongoose` from 8.13.2 to 8.14.2
- [Release notes](https://github.com/Automattic/mongoose/releases)
- [Changelog](https://github.com/Automattic/mongoose/blob/master/CHANGELOG.md)
- [Commits](Automattic/mongoose@8.13.2...8.14.2)

Updates `mysql2` from 3.14.0 to 3.14.1
- [Release notes](https://github.com/sidorares/node-mysql2/releases)
- [Changelog](https://github.com/sidorares/node-mysql2/blob/master/Changelog.md)
- [Commits](https://github.com/sidorares/node-mysql2/commits)

Updates `octokit` from 4.1.2 to 4.1.3
- [Release notes](https://github.com/octokit/octokit.js/releases)
- [Commits](octokit/octokit.js@v4.1.2...v4.1.3)

---
updated-dependencies:
- dependency-name: "@octokit/core"
  dependency-version: 6.1.5
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: production-dependencies
- dependency-name: cron
  dependency-version: 4.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: production-dependencies
- dependency-name: dotenv
  dependency-version: 16.5.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: production-dependencies
- dependency-name: eventsource
  dependency-version: 3.0.7
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: production-dependencies
- dependency-name: express
  dependency-version: 5.1.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: production-dependencies
- dependency-name: "@types/express"
  dependency-version: 5.0.1
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: production-dependencies
- dependency-name: mongoose
  dependency-version: 8.14.2
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: production-dependencies
- dependency-name: mysql2
  dependency-version: 3.14.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: production-dependencies
- dependency-name: octokit
  dependency-version: 4.1.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: production-dependencies
...

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Author: dependabot[bot]