Bump step-security/harden-runner from 2.7.0 to 2.7.1

Bumps [step-security/harden-runner](https://github.com/step-security/harden-runner) from 2.7.0 to 2.7.1.
- [Release notes](https://github.com/step-security/harden-runner/releases)
- [Commits](https://github.com/step-security/harden-runner/compare/63c24ba6bd7ba022e95695ff85de572c04a18142...a4aa98b93cab29d9b1101a6143fb8bce00e2eac4

)

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

Signed-off-by: dependabot[bot] <support@github.com>