[Snyk] Security upgrade express from 4.17.1 to 4.22.0

[TiagoSansao]

Snyk has created this PR to fix 1 vulnerabilities in the yarn dependencies of this project.

Snyk changed the following file(s):

• back-end/package.json
• back-end/yarn.lock

Note for zero-installs users

If you are using the Yarn feature zero-installs that was introduced in Yarn V2, note that this PR does not update the .yarn/cache/ directory meaning this code cannot be pulled and immediately developed on as one would expect for a zero-install project - you will need to run yarn to update the contents of the ./yarn/cache directory.
If you are not using zero-install you can ignore this as your flow should likely be unchanged.

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Allocation of Resources Without Limits or Throttling SNYK-JS-QS-15268416	708

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Important

• Check the changes in this PR to ensure they won't cause issues with your project.
• Max score is 1000. Note that the real score may have changed since the PR was raised.
• This PR was automatically created by Snyk using the credentials of a real user.

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🦉 Allocation of Resources Without Limits or Throttling

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[Copilot]

Pull request overview

Upgrades the back-end’s Express dependency to a newer 4.x release to address the reported Snyk vulnerability in the dependency tree (notably involving qs).

Changes:

• Bump express in back-end/package.json from ^4.17.1 to ^4.22.0.
• Refresh back-end/yarn.lock to the new resolved Express version and updated transitive dependencies (e.g., qs, body-parser, send, serve-static, etc.).

Reviewed changes

Copilot reviewed 1 out of 2 changed files in this pull request and generated no comments.

File	Description
back-end/package.json	Updates the Express version range to pull in the security-fixing release line.
back-end/yarn.lock	Updates locked versions/resolutions for Express and its transitive dependencies to match the upgrade.

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