Bump weasyprint from 68.1 to 70.0 in /requirements

Bumps [weasyprint](https://github.com/Kozea/WeasyPrint) from 68.1 to 70.0.
- [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/v68.1...v70.0)

---
updated-dependencies:
- dependency-name: weasyprint
  dependency-version: '70.0'
  dependency-type: direct:production
...

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

requirements/requirements.txt

@@ -33,7 +33,7 @@ requests==2.33.1
 tzdata==2026.1
 uritemplate==4.2.0
 url-normalize==3.0.0
-weasyprint==68.1
+weasyprint==70.0
 xlsxwriter==3.2.9
 djbs-theme @ git+https://github.com/interlegis/djbs-theme.git@v1.0.8
 django-dashboard @ git+https://github.com/interlegis/django-dashboard.git