Add info on dependency paths poetry support

[gautambhat]

Thanks for improving Semgrep Docs 😀

Please ensure

• A subject matter expert (SME) reviews the content
• A technical writer reviews the content or PR
• This change has no security implications or else you have pinged the security team
• Redirects are added if the PR changes page URLs
• If you have changed any header tag links (doc/#this-kind-of-anchor), update all instances of that link

[gautambhat]

Just putting this here in preparation to go live with poetry...

[netlify]

✅ Don't forget to add /docs at the end of the deploy preview site URL!

Name	Link
🔨 Latest commit	a8093c2
🔍 Latest deploy log	https://app.netlify.com/sites/semgrep-docs-prod/deploys/678ac3937b0a3f0008140bf1
😎 Deploy Preview	https://deploy-preview-1914--semgrep-docs-prod.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[gautambhat]