chore(deps): bump lxml from 6.0.2 to 6.0.4

Bumps [lxml](https://github.com/lxml/lxml) from 6.0.2 to 6.0.4.
- [Release notes](https://github.com/lxml/lxml/releases)
- [Changelog](https://github.com/lxml/lxml/blob/master/CHANGES.txt)
- [Commits](lxml/lxml@lxml-6.0.2...lxml-6.0.4)

---
updated-dependencies:
- dependency-name: lxml
  dependency-version: 6.0.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

requirements.txt

@@ -26,7 +26,7 @@ html2text==2025.4.15
 humanize==4.15.0
 jira==3.10.5
 PyGithub==2.9.0
-lxml==6.0.2
+lxml==6.0.4
 Markdown==3.10.2
 openpyxl==3.1.5
 Pillow==12.2.0  # required by django-imagekit