[Snyk] Security upgrade tsoa from 5.1.1 to 6.0.0

[rhanka]

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 :-------------------------:|-------------------------|:-------------------------|:-------------------------|:-------------------------  | **631/1000**
**Why?** Proof of Concept exploit, Has a fix available, CVSS 6.2 | Missing Release of Resource after Effective Lifetime
[SNYK-JS-INFLIGHT-6095116](https://snyk.io/vuln/SNYK-JS-INFLIGHT-6095116) | Yes | Proof of Concept (*) Note that the real score may have changed since the PR was raised.

Commit messages

Package name: tsoa

The new version differs by 111 commits.

• e381199 v6.0.0
• b308879 chores: TS/ESLint fixes
• 8466f65 chores: Safe upgrades
• 5af90dd feat: Add Node 21 to CI
• 4e2395a fix: Omit global namespace from name generation
• 9c46f2a Merge pull request #1521 from hpx7/patch-1
• a492c91 fix tests
• 3795a58 Fix koa ValidateError
• 8b30ec7 Merge pull request #1512 from lukeautry/dependabot/npm_and_yarn/axios-1.6.1
• be14846 v6.0.0-rc.5
• b5b3cd4 fix: buildContext return type inference
• b71f40a chore(deps): bump axios from 1.4.0 to 1.6.1
• 0afe154 Merge pull request #1498 from nemnandor/master
• 19f6463 Merge pull request #1509 from dderevjanik/feat/openid
• b6dcb41 feat: openid
• c1eea73 fix: notices
• 9b6bb40 fix: default value not means not required in docs
• 160ed28 fix: windows-dependent tests
• c94f7e9 Merge pull request #1497 from lukeautry/dependabot/npm_and_yarn/babel/traverse-7.23.2
• 26e88bd Merge pull request #1501 from connor-g-swyftx/fix/intersection-unions-validator
• 805955d chore: add return type to buildContext
• bb53e2e fix: \n character is handled different in windows
• 7f4d1ce fix: validate intersection with multiple unions
• 46eec9b chore: add failing test case for intersection with multiple unions

See the full diff

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