Bump lxml from 4.9.0 to 4.9.1 (#308)

Bumps [lxml](https://github.com/lxml/lxml) from 4.9.0 to 4.9.1.
- [Release notes](https://github.com/lxml/lxml/releases)
- [Changelog](https://github.com/lxml/lxml/blob/master/CHANGES.txt)
- [Commits](lxml/lxml@lxml-4.9.0...lxml-4.9.1)

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

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

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

requirements.txt

@@ -29,7 +29,7 @@ xlrd==2.0.1
 openpyxl==3.0.10
 odfpy==1.4.1
 cchardet==2.1.7
-lxml==4.9.0
+lxml==4.9.1
 olefile==0.46
 Pillow==9.1.1
 vobject==0.9.6.1