meta: 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](step-security/harden-runner@eb238b5...63c24ba)

---
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>
PR-URL: #51641
Refs: step-security/harden-runner@63c24ba
Reviewed-By: Marco Ippolito <marcoippolito54@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>

.github/workflows/scorecard.yml

@@ -33,7 +33,7 @@ jobs:
 
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@eb238b55efaa70779f274895e782ed17c84f2895  # v2.6.1
+        uses: step-security/harden-runner@63c24ba6bd7ba022e95695ff85de572c04a18142  # v2.7.0
         with:
           egress-policy: audit  # TODO: change to 'egress-policy: block' after couple of runs