build(deps): bump vite and @angular-devkit/build-angular in /firestore

Bumps [vite](https://github.com/vitejs/vite/tree/HEAD/packages/vite) to 6.2.6 and updates ancestor dependency [@angular-devkit/build-angular](https://github.com/angular/angular-cli). These dependencies need to be updated together.


Updates `vite` from 4.3.9 to 6.2.6
- [Release notes](https://github.com/vitejs/vite/releases)
- [Changelog](https://github.com/vitejs/vite/blob/v6.2.6/packages/vite/CHANGELOG.md)
- [Commits](https://github.com/vitejs/vite/commits/v6.2.6/packages/vite)

Updates `@angular-devkit/build-angular` from 16.1.3 to 19.2.7
- [Release notes](https://github.com/angular/angular-cli/releases)
- [Changelog](https://github.com/angular/angular-cli/blob/main/CHANGELOG.md)
- [Commits](angular/angular-cli@16.1.3...19.2.7)

---
updated-dependencies:
- dependency-name: vite
  dependency-version: 6.2.6
  dependency-type: indirect
- dependency-name: "@angular-devkit/build-angular"
  dependency-version: 19.2.7
  dependency-type: direct:development
...

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

Author: dependabot[bot]