Bump step-security/harden-runner from 2.3.1 to 2.4.0

Bumps [step-security/harden-runner](https://github.com/step-security/harden-runner) from 2.3.1 to 2.4.0.
- [Release notes](https://github.com/step-security/harden-runner/releases)
- [Commits](https://github.com/step-security/harden-runner/compare/6b3083af2869dc3314a0257a42f4af696cc79ba3...128a63446a954579617e875aaab7d2978154e969)

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

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