Bump lxml from 4.9.3 to 4.9.4

Bumps [lxml](https://github.com/lxml/lxml) from 4.9.3 to 4.9.4.
- [Release notes](https://github.com/lxml/lxml/releases)
- [Changelog](https://github.com/lxml/lxml/blob/master/CHANGES.txt)
- [Commits](https://github.com/lxml/lxml/compare/lxml-4.9.3...lxml-4.9.4)

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

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

requirements.txt

@@ -1,7 +1,7 @@
 feedgen==0.9.0
 feedparser==6.0.10
 listparser==0.19.0
-lxml==4.9.3
+lxml==4.9.4
 python-dateutil==2.8.2
 pyyaml==6.0
 pyinstaller==6.0.0