fix: support escaping special characters in yaml-update step

[nitishfy]

Closes #5355

[netlify]

✅ Deploy Preview for docs-kargo-io ready!

Name	Link
🔨 Latest commit	d763076
🔍 Latest deploy log	https://app.netlify.com/projects/docs-kargo-io/deploys/6981384a79690f0009a77d29
😎 Deploy Preview	https://deploy-preview-5618.docs.kargo.io
📱 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 project configuration.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 56.17%. Comparing base (b7b9006) to head (d763076).
⚠️ Report is 31 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5618      +/-   ##
==========================================
- Coverage   56.29%   56.17%   -0.12%     
==========================================
  Files         426      448      +22     
  Lines       32262    37674    +5412     
==========================================
+ Hits        18163    21165    +3002     
- Misses      13045    15252    +2207     
- Partials     1054     1257     +203     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.