Bump cairosvg from 2.5.1 to 2.7.0 in /scripts

Bumps [cairosvg](https://github.com/Kozea/CairoSVG) from 2.5.1 to 2.7.0.
- [Release notes](https://github.com/Kozea/CairoSVG/releases)
- [Changelog](https://github.com/Kozea/CairoSVG/blob/master/NEWS.rst)
- [Commits](Kozea/CairoSVG@2.5.1...2.7.0)

---
updated-dependencies:
- dependency-name: cairosvg
  dependency-type: direct:production
...

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

Author: dependabot[bot]

scripts/requirements.txt

@@ -1 +1 @@
-cairosvg==2.5.1
+cairosvg==2.7.0