Fix for stretched image in Safari

[adrianmg]

No bueno:

It needs the height attribute to get avoid stretching

[vercel[bot]]

This pull request is being automatically deployed with Vercel (learn more).
To see the status of your deployment, click below or on the icon next to each commit.

🔍 Inspect: https://vercel.com/primer/design/APWs88nevRA1qFTChhzHzKBrUaEL
✅ Preview: https://design-git-adrianmg-img-fix-pewpew-primer.vercel.app