Bump step-security/harden-runner from 2.6.1 to 2.7.0

Bumps [step-security/harden-runner](https://github.com/step-security/harden-runner) from 2.6.1 to 2.7.0.
- [Release notes](https://github.com/step-security/harden-runner/releases)
- [Commits](https://github.com/step-security/harden-runner/compare/eb238b55efaa70779f274895e782ed17c84f2895...63c24ba6bd7ba022e95695ff85de572c04a18142

)

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

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