build(deps): Bump @koa/cors and oidc-provider

Bumps [@koa/cors](https://github.com/koajs/cors) to 5.0.0 and updates ancestor dependency [oidc-provider](https://github.com/panva/node-oidc-provider). These dependencies need to be updated together.


Updates `@koa/cors` from 3.4.3 to 5.0.0
- [Changelog](https://github.com/koajs/cors/blob/master/History.md)
- [Commits](koajs/cors@3.4.3...5.0.0)

Updates `oidc-provider` from 7.14.3 to 8.6.1
- [Release notes](https://github.com/panva/node-oidc-provider/releases)
- [Changelog](https://github.com/panva/node-oidc-provider/blob/main/CHANGELOG.md)
- [Commits](panva/node-oidc-provider@v7.14.3...v8.6.1)

---
updated-dependencies:
- dependency-name: "@koa/cors"
  dependency-type: indirect
- dependency-name: oidc-provider
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>