[Snyk] Security upgrade @nestjs/core from 8.0.6 to 9.0.5

[evereq]

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 `yarn` dependencies of this project.

#### Changes included in this PR - Changes to the following files to upgrade the vulnerable dependencies to a fixed version: - api/package.json - api/yarn.lock #### Note for [zero-installs](https://yarnpkg.com/features/zero-installs) users If you are using the Yarn feature [zero-installs](https://yarnpkg.com/features/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: Severity | Priority Score (*) | Issue | Breaking Change | Exploit Maturity :-------------------------:|-------------------------|:-------------------------|:-------------------------|:-------------------------  | **471/1000**
**Why?** Recently disclosed, Has a fix available, CVSS 3.7 | Information Exposure
[SNYK-JS-NESTJSCORE-2869127](https://snyk.io/vuln/SNYK-JS-NESTJSCORE-2869127) | Yes | No Known Exploit (*) Note that the real score may have changed since the PR was raised. Check the changes in this PR to ensure they won't cause issues with your project. ------------ **Note:** *You are seeing this because you or someone else with access to this repository has authorized Snyk to open fix PRs.* For more information: 🧐 [View latest project report](https://app.snyk.io/org/ever/project/caca25c6-feae-4b4e-9ba2-9933449b2823?utm_source=github&utm_medium=referral&page=fix-pr) 🛠 [Adjust project settings](https://app.snyk.io/org/ever/project/caca25c6-feae-4b4e-9ba2-9933449b2823?utm_source=github&utm_medium=referral&page=fix-pr/settings) 📚 [Read more about Snyk's upgrade and patch logic](https://support.snyk.io/hc/en-us/articles/360003891078-Snyk-patches-to-fix-vulnerabilities) [//]: # (snyk:metadata:{"prId":"9ee99aa3-88d3-44d1-9611-ef152ddaf3a2","prPublicId":"9ee99aa3-88d3-44d1-9611-ef152ddaf3a2","dependencies":[{"name":"@nestjs/core","from":"8.0.6","to":"9.0.5"}],"packageManager":"yarn","projectPublicId":"caca25c6-feae-4b4e-9ba2-9933449b2823","projectUrl":"https://app.snyk.io/org/ever/project/caca25c6-feae-4b4e-9ba2-9933449b2823?utm_source=github&utm_medium=referral&page=fix-pr","type":"auto","patch":[],"vulns":["SNYK-JS-NESTJSCORE-2869127"],"upgrade":["SNYK-JS-NESTJSCORE-2869127"],"isBreakingChange":true,"env":"prod","prType":"fix","templateVariants":["updated-fix-title","priorityScore"],"priorityScoreList":[471]}) --- **Learn how to fix vulnerabilities with free interactive lessons:** 🦉 [Learn about vulnerability in an interactive lesson of Snyk Learn.](https://learn.snyk.io/?loc=fix-pr)

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