Bump step-security/harden-runner from 2.7.1 to 2.8.0 (#308)

Bumps [step-security/harden-runner](https://github.com/step-security/harden-runner) from 2.7.1 to 2.8.0.
- [Release notes](https://github.com/step-security/harden-runner/releases)
- [Commits](step-security/harden-runner@a4aa98b...f086349)

---
updated-dependencies:
- dependency-name: step-security/harden-runner
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: Eduardo Sanchez <eduardodfmex@hotmail.com>