build(deps): bump step-security/harden-runner from 2.7.0 to 2.7.1 (#442)

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](step-security/harden-runner@63c24ba...a4aa98b)

---
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>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Alan Jowett <alanjo@microsoft.com>

.github/workflows/udpate-docs.yml

@@ -30,7 +30,7 @@ jobs:
     steps:
 
     - name: Harden Runner
-      uses: step-security/harden-runner@63c24ba6bd7ba022e95695ff85de572c04a18142
+      uses: step-security/harden-runner@a4aa98b93cab29d9b1101a6143fb8bce00e2eac4
       with:
         egress-policy: audit # TODO: change to 'egress-policy: block' after couple of runs