Bump fonttools from 4.42.1 to 4.43.0 in /docs (#1450)

Bumps [fonttools](https://github.com/fonttools/fonttools) from 4.42.1 to 4.43.0.
- [Release notes](https://github.com/fonttools/fonttools/releases)
- [Changelog](https://github.com/fonttools/fonttools/blob/main/NEWS.rst)
- [Commits](fonttools/fonttools@4.42.1...4.43.0)

---
updated-dependencies:
- dependency-name: fonttools
  dependency-type: direct:production
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

docs/requirements.txt

@@ -18,7 +18,7 @@ docopt==0.6.2
 exceptiongroup==1.1.3
 executing==1.2.0
 fastjsonschema==2.18.0
-fonttools==4.42.1
+fonttools==4.43.0
 frozenlist==1.4.0
 gql==3.4.1
 graphql-core==3.2.3