Update furo requirement from ~=2024.8.6 to ~=2025.7.19

Updates the requirements on [furo](https://github.com/pradyunsg/furo) to permit the latest version.
- [Release notes](https://github.com/pradyunsg/furo/releases)
- [Changelog](https://github.com/pradyunsg/furo/blob/main/docs/changelog.md)
- [Commits](pradyunsg/furo@2024.08.06...2025.07.19)

---
updated-dependencies:
- dependency-name: furo
  dependency-version: 2025.7.19
  dependency-type: direct:production
...

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

Author: dependabot[bot]

docs/requirements.txt

@@ -1,5 +1,5 @@
 sphinx~=8.2.3
-furo~=2024.8.6
+furo~=2025.7.19
 requests~=2.32.3
 pydantic~=2.10.6
 jinja2~=3.1.6