Build(deps): Bump weasyprint from 66 to 68.0 in /requirements

Bumps [weasyprint](https://github.com/Kozea/WeasyPrint) from 66 to 68.0.
- [Release notes](https://github.com/Kozea/WeasyPrint/releases)
- [Changelog](https://github.com/Kozea/WeasyPrint/blob/main/docs/changelog.rst)
- [Commits](https://github.com/Kozea/WeasyPrint/compare/v66.0...v68.0)

---
updated-dependencies:
- dependency-name: weasyprint
  dependency-version: '68.0'
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

requirements/requirements.txt

@@ -23,7 +23,7 @@ python-magic==0.4.15
 unipath==1.1
 Pillow==10.3.0
 reportlab==3.6.13
-WeasyPrint==66
+WeasyPrint==68.0
 trml2pdf==0.6
 gunicorn==23.0.0
 more-itertools==8.2.0