Update socials link in the footer with GitHub and Facebook

[reshamas]

Description

I would like to update the socials link on the footer of the website

• GitHub: https://github.com/pyladies/global-conference
• Facebook: https://www.facebook.com/pyladies

Website: https://conference.pyladies.com/docs/volunteers/committee_infra

File that needs to be updated:
https://github.com/pyladies/global-conference/blob/main/src/config/social.json

{
  "mastodon": "https://fosstodon.org/@pyladiescon",
  "bluesky": "https://bsky.app/profile/pyladiescon.bsky.social",
  "instagram": "https://instagram.com/pyladiescon",
  "linkedin": "https://www.linkedin.com/company/pyladiescon",
  "twitter": "https://twitter.com/pyladiescon",
  "youtube": "https://www.youtube.com/@PyLadiesGlobal",
  "facebook": "",
  "github": "",

[DennyPerez18]

@reshamas We don't have a Facebook account.

[cmaureir]

In the case the change is straightforward @reshamas it's better if you submit the PR right away, and we can have the discussion on that. Feel free to add the line with the github URL!