Bump fonttools in /docs in the pip group across 1 directory

Bumps the pip group with 1 update in the /docs directory: [fonttools](https://github.com/fonttools/fonttools).


Updates `fonttools` from 4.59.1 to 4.61.0
- [Release notes](https://github.com/fonttools/fonttools/releases)
- [Changelog](https://github.com/fonttools/fonttools/blob/main/NEWS.rst)
- [Commits](fonttools/fonttools@4.59.1...4.61.0)

---
updated-dependencies:
- dependency-name: fonttools
  dependency-version: 4.61.0
  dependency-type: direct:production
  dependency-group: pip
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

docs/requirements.txt

@@ -24,7 +24,7 @@ docutils==0.21.2
     #   sphinx-argparse
     #   sphinx-rtd-theme
     #   sphinxcontrib-bibtex
-fonttools==4.59.1
+fonttools==4.61.0
     # via matplotlib
 idna==3.10
     # via requests