[Snyk] Security upgrade express from 4.17.2 to 4.17.3

[Miteshryp]

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
	768/1000 Why? Proof of Concept exploit, Recently disclosed, Has a fix available, CVSS 7.5	Prototype Pollution SNYK-JS-QS-3153490	No	Proof of Concept

(*) Note that the real score may have changed since the PR was raised.

Commit messages

Package name: express

The new version differs by 30 commits.

• 3d7fce5 4.17.3
• f906371 build: update example dependencies
• 6381bc6 deps: qs@6.9.7
• a007863 deps: body-parser@1.19.2
• e98f584 Revert "build: use minimatch@3.0.4 for Node.js < 4"
• a659137 tests: use strict mode
• a39e409 tests: prevent leaking changes to NODE_ENV
• 82de4de examples: fix path traversal in downloads example
• 12310c5 build: use nyc for test coverage
• 884657d examples: remove bitwise syntax for includes check
• 7511d08 build: use minimatch@3.0.4 for Node.js < 4
• 2585f20 tests: fix test missing assertion
• 9d09762 build: supertest@6.2.2
• 43cc56e build: clean up gitignore
• 1c7bbcc build: Node.js@14.19
• 9cbbc8a deps: cookie@0.4.2
• 6fbc269 pref: remove unnecessary regexp for trust proxy
• 2bc734a deps: accepts@~1.3.8
• 89bb531 docs: fix typo in res.download jsdoc
• 744564f tests: add test for multiple ips in "trust proxy"
• da6cb0e tests: add range tests to res.download
• 00ad5be tests: add more tests for app.request & app.response
• 141914e tests: fix tests that did not bubble errors
• bd4fdfe tests: remove global dependency on should

See the full diff

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