NO-SNOW: Add Snyk scan workflow for POM files

[sfc-gh-nsaliaris]

This workflow configures Snyk scans for pull requests and scheduled runs. This accounts for the nonstandard pom files too.

[github-actions]

Thank you for your submission, we really appreciate it. Like many open-source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution. You can sign the CLA by just posting a Pull Request Comment same as the below format.

---

I have read the CLA Document and I hereby sign the CLA

---

_{You can retrigger this bot by commenting recheck in this Pull Request. Posted by the CLA Assistant Lite bot.}

[sfc-gh-nsaliaris]

I have read the CLA Document and I hereby sign the CLA