Bump @sap/xssec from 4.8.0 to 4.9.0 in the production-dependencies group

Bumps the production-dependencies group with 1 update: @sap/xssec.


Updates `@sap/xssec` from 4.8.0 to 4.9.0

---
updated-dependencies:
- dependency-name: "@sap/xssec"
  dependency-version: 4.9.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: production-dependencies
...

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

Author: dependabot[bot]