feat(pixels): add my new pixel (50, 48)

[bibliofilo]

Checklist

• I ran npm test locally and it passed without errors.

• I only edited the _data/pixels.json file.

• I entered the username in the pixels.json that I'm also using to create this pull request.
• I acknowledge that all my contributions will be made under the project's license.

[mergify]

Unfortunately the automatic code review has failed. Please click the details button for more information. If the details reveal a fail in Danger please note that there is currently a known issue (#2046) and @rmkubik will merge your PR manually in the coming days. Sorry for the inconvenience.

[mergify]

Unfortunately the automatic code review has failed. Please click the details button for more information. If the details reveal a fail in Danger please note that there is currently a known issue (#2046) and @rmkubik will merge your PR manually in the coming days. Sorry for the inconvenience.