Bump python-liquid from 1.9.3 to 1.9.4 (#144)

Bumps [python-liquid](https://github.com/jg-rp/liquid) from 1.9.3 to 1.9.4.
- [Release notes](https://github.com/jg-rp/liquid/releases)
- [Changelog](https://github.com/jg-rp/liquid/blob/main/CHANGELOG.rst)
- [Commits](https://github.com/jg-rp/liquid/compare/v1.9.3...v1.9.4)

---
updated-dependencies:
- dependency-name: python-liquid
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements.txt

@@ -7,7 +7,7 @@ pycparser==2.21
 pygit2==1.12.2
 python-dateutil==2.8.2
 python-frontmatter==1.0.0
-python-liquid==1.9.3
+python-liquid==1.9.4
 PyYAML==6.0.1
 six==1.16.0
 soupsieve==2.4.1