chore(deps): bump weasyprint from 69.0 to 70.0 in /src/backend (#12833)

* chore(deps): bump weasyprint from 69.0 to 70.0 in /src/backend

Bumps [weasyprint](https://github.com/Kozea/WeasyPrint) from 69.0 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/v69.0...v70.0)

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

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

* fix style

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Matthias Mair <code@mjmair.com>

src/backend/requirements-3.14.txt

@@ -2518,9 +2518,9 @@ wcwidth==0.8.3 \
     #   -c src/backend/requirements.txt
     #   blessed
     #   prettytable
-weasyprint==69.0 \
-    --hash=sha256:475951cfd917014de6d4d005caff48c6aa867e7e42b80cd5b16a0484a1609ee6 \
-    --hash=sha256:a7a32f39ca16bd82ef11de99c92ea4b5f14951c9033af035e451ce4f4ee0a88c
+weasyprint==70.0 \
+    --hash=sha256:5043e55e38d2a2af2b2b871e869697b1f65dad5f8b4a3677961d04ceacf9c5fe \
+    --hash=sha256:c263abf0e86c747b12af678b67f85f4abbfb97d18a20503031e7ba94e4b8cf8c
     # via
     #   -c src/backend/requirements.txt
     #   -r src/backend/requirements.in