Bump lxml from 4.9.1 to 4.9.2

Bumps [lxml](https://github.com/lxml/lxml) from 4.9.1 to 4.9.2.
- [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-4.9.1...lxml-4.9.2)

---
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

@@ -3,7 +3,7 @@ ConfigArgParse==1.5.3
 cssselect==1.2.0
 gixy==0.1.20
 Jinja2==3.1.2
-lxml==4.9.1
+lxml==4.9.2
 MarkupSafe==2.1.1
 pyparsing==2.4.7
 six==1.16.0