Bump lxml from 6.0.2 to 6.0.3 in /requirements/partial

Bumps [lxml](https://github.com/lxml/lxml) from 6.0.2 to 6.0.3.
- [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-6.0.3)

---
updated-dependencies:
- dependency-name: lxml
  dependency-version: 6.0.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

requirements/partial/requirements_production.txt

@@ -6,7 +6,7 @@ fastjsonschema==2.21.2
 Flask==3.1.3
 gunicorn==25.1.0
 pypdf[crypto]==6.9.2
-lxml==6.0.2
+lxml==6.0.3
 psycopg[c]==3.3.3
 psycopg-pool==3.3.0
 requests==2.32.5