Bump sigstore and @angular-eslint/schematics in /example

Bumps [sigstore](https://github.com/sigstore/sigstore-js) and [@angular-eslint/schematics](https://github.com/angular-eslint/angular-eslint/tree/HEAD/packages/schematics). These dependencies needed to be updated together.

Updates `sigstore` from 1.9.0 to 4.1.1
- [Release notes](https://github.com/sigstore/sigstore-js/releases)
- [Commits](https://github.com/sigstore/sigstore-js/compare/sigstore@1.9.0...sigstore@4.1.1)

Updates `@angular-eslint/schematics` from 16.3.1 to 22.1.0
- [Release notes](https://github.com/angular-eslint/angular-eslint/releases)
- [Changelog](https://github.com/angular-eslint/angular-eslint/blob/main/packages/schematics/CHANGELOG.md)
- [Commits](https://github.com/angular-eslint/angular-eslint/commits/v22.1.0/packages/schematics)

---
updated-dependencies:
- dependency-name: sigstore
  dependency-version: 4.1.1
  dependency-type: indirect
- dependency-name: "@angular-eslint/schematics"
  dependency-version: 22.1.0
  dependency-type: indirect
...

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Author: dependabot[bot]