SNOW-2236247 Add secret_scanning.yml

[sfc-gh-fochnik]

Add secret_scanning.yml and CODEOWNERS entries for GitHub Advanced Security Secret Scanning configuration

[github-actions]

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

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1 out of 2 committers have signed the CLA.
✅ (sfc-gh-fochnik)[https://github.com/sfc-gh-fochnik]
❌ @sfc-gh-turbaszek
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