Bump libsass from 0.22.0 to 0.23.0

Bumps [libsass](https://github.com/sass/libsass) from 0.22.0 to 0.23.0.
- [Release notes](https://github.com/sass/libsass/releases)
- [Commits](https://github.com/sass/libsass/commits)

---
updated-dependencies:
- dependency-name: libsass
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements.txt

@@ -1,4 +1,4 @@
 jinja2==3.1.2
-libsass==0.22.0
+libsass==0.23.0
 pelican[Markdown]==4.9.1
 pillow==10.2.0