fix: update release-info.json to remove template typo for version

[pixelflips]

Description

Fixes a typo in the Slack release notification that was causing the version to display with a double "v" prefix (e.g., "Pine Release vv3.13.0" instead of "Pine Release v3.13.0").

The issue occurred because:

1. The VERSION environment variable is set from git describe --tags --abbrev=0, which returns the full tag name including the v prefix (e.g., v3.13.0)
2. The Slack payload template was adding an additional v before the ${{ env.VERSION }} variable

This PR removes the redundant v from the Slack payload template.

Fixes DSS-69

Type of change

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

• tested manually

Verified by reviewing the template logic and confirming that git describe --tags --abbrev=0 returns tags with the v prefix included.

Test Configuration:

• Pine versions: N/A (CI/CD change only)
• OS: N/A
• Browsers: N/A
• Screen readers: N/A
• Misc: GitHub Actions workflow

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my code

[netlify]

✅ Deploy Preview for pine-design-system ready!

Name	Link
🔨 Latest commit	456c98a
🔍 Latest deploy log	https://app.netlify.com/projects/pine-design-system/deploys/69658f4ab6d2720008d7b436
😎 Deploy Preview	https://deploy-preview-631--pine-design-system.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 project configuration.