Update sites.yml

[lyoshenka]

This PR is:

• [X] Adding a new domain
• [ ] Updating existing domain size
• [ ] Changing domain name
• [ ] Removing existing domain from list
• [ ] Website code changes (512kb.club site)
• [ ] Other not listed

• [X] I used the uncompressed size of the site
• [X] I have included a link to the Cloudflare report
• [X] This site is not an ultra minimal site
• [X] The following information is filled identical to the data file

I confirm that I have read the FAQ section, particularly the two red items around minimal pages and inappropriate content and I attest that this site is neither of these things.

• [X] Check to confirm

- domain: grin.io
  url: https://grin.io/
  size: 352.37
  last_checked: 2024-10-22

Cloudflare Report:

https://radar.cloudflare.com/scan/088f76fd-f33a-4858-962d-46dc7aa0d085/summary