OpenGraph images have an incompatible height with BlueSky

### URL: https://bsky.app/profile/rafaelgss.dev/post/3ml4g2vyauk2n ### Browser Name: Helium (Chromium) ### Browser Version: latest ### Operating System: macOS ### How to reproduce the issue: Looking at the OpenGraph images on Bluesky, it looks like recently they started getting a black bar added at the bottom. I'm uncertain if this is a change on Bluesky's end, or if it's a change on our image generation pipeline. Either way, something to poke at - potentially a good first issue, too. <img width="592" height="598" alt="Image" src="https://github.com/user-attachments/assets/22ad00bc-fa47-48cd-9139-f2b43a87cc4d" /> <img width="592" height="638" alt="Image" src="https://github.com/user-attachments/assets/c40a50b9-e271-4f96-8c14-5035aaf350e6" />