[Snyk] Security upgrade express from 4.18.1 to 4.19.2

[Danielv123]

This PR was automatically created by Snyk using the credentials of a real user.

Snyk has created this PR to fix one or more vulnerable packages in the `npm` dependencies of this project.

#### Changes included in this PR - Changes to the following files to upgrade the vulnerable dependencies to a fixed version: - backend/package.json - backend/package-lock.json #### Vulnerabilities that will be fixed ##### With an upgrade: Severity | Priority Score (*) | Issue | Breaking Change | Exploit Maturity :-------------------------:|-------------------------|:-------------------------|:-------------------------|:-------------------------  | **591/1000**
**Why?** Recently disclosed, Has a fix available, CVSS 6.1 | Open Redirect
[SNYK-JS-EXPRESS-6474509](https://snyk.io/vuln/SNYK-JS-EXPRESS-6474509) | No | No Known Exploit (*) Note that the real score may have changed since the PR was raised.

Commit messages

Package name: express

The new version differs by 77 commits.

• b28db2c 4.19.2
• 0b74695 Improved fix for open redirect allow list bypass
• 4f0f6cc 4.19.1
• a003cfa Allow passing non-strings to res.location with new encoding handling checks fixes #5554 #5555
• a1fa90f fixed un-edited version in history.md for 4.19.0
• 11f2b1d build: fix build due to inconsistent supertest behavior in older versions
• 084e365 4.19.0
• 0867302 Prevent open redirect allow list bypass due to encodeurl
• 567c9c6 Add note on how to update docs for new release (#5541)
• 69a4cf2 deps: cookie@0.6.0
• 4ee853e docs: loosen TC activity rules
• 414854b docs: nominating @ wesleytodd to be project captian
• 06c6b88 docs: update release date
• 1b51eda 4.18.3
• b625132 build: pin Node 21.x to minor
• e3eca80 build: pin Node 21.x to minor
• 23b44b3 build: support Node.js 21.6.2
• b9fea12 build: support Node.js 21.x in appveyor
• c259c34 build: support Node.js 21.x
• fdeb1d3 build: support Node.js 20.x in appveyor
• 734b281 build: support Node.js 20.x
• 0e3ab6e examples: improve view count in cookie-sessions
• 59af63a build: Node.js@18.19
• e720c5a docs: add documentation for benchmarks

See the full diff

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