chore(deps): bump @primer/gatsby-theme-doctocat in /docs (#3400)

Bumps @primer/gatsby-theme-doctocat from 4.4.2 to 4.4.3.

---
updated-dependencies:
- dependency-name: "@primer/gatsby-theme-doctocat"
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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