Bump step-security/harden-runner from 2.15.0 to 2.15.1

Bump step-security/harden-runner from 2.15.0 to 2.15.1

## Release notes

Sourced from step-security/harden-runner's releases.

v2.15.1
What's Changed

Fixes step-security/harden-runner#642 bug due to which post step was failing on Windows ARM runners

Updates npm packages

Full Changelog: https://github.com/step-security/harden-runner/compare/v2.15.0...v2.15.1

## Commits

58077d3 Release v2.15.1 (#641)
See full diff in compare view

![Dependabot compatibility score](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores)

Issue-ID: CIMAN-33
Signed-off-by: dependabot[bot] <support@github.com>
Change-Id: Ia898ead27d3ecdba81cc96d8c63cd288c0b108c1
GitHub-PR: https://github.com/onap/doc/pull/8
GitHub-Hash: 2803e487c499910a
Signed-off-by: onap.gh2gerrit <releng+onap-gh2gerrit@linuxfoundation.org>