Bump step-security/harden-runner from 2.10.3 to 2.10.4 (#4614)

Bumps [step-security/harden-runner](https://github.com/step-security/harden-runner) from 2.10.3 to 2.10.4.
- [Release notes](https://github.com/step-security/harden-runner/releases)
- [Commits](https://github.com/step-security/harden-runner/compare/c95a14d0e5bab51a9f56296a4eb0e416910cd350...cb605e52c26070c328afc4562f0b4ada7618a84e)

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

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