Regenerate yarn.lock file

Summary:
As explained [here](facebook/docusaurus#10491 (comment)), it can happen that transitive dependencies are not updated after a Docusaurus update. Regenerate the `yarn.lock` file and ensure no vulnerabilities are present anymore.

Yes, the `tgz` files are expected, as explained [here](https://fb.workplace.com/groups/docusaurus/permalink/1906205756418203/?fbclid=IwZXh0bgNhZW0CMTEAAR1jT0Yuh-gH8dOu1DY16E2GWtXf7s3pju14em2XXoJ8aw9V4KAgc97myQ0_aem_hRYpzJ7AD3Cjq82I4DcNHQ).

Reviewed By: jcpetruzza

Differential Revision: D66876270

fbshipit-source-id: 3ee4d9216a3612f47cefdd8d4d00d9ec543084d9

Author: robertoaloi