chore(deps): bump lxml (#8925)

Bumps the pip group with 1 update in the /apps/api/requirements directory: [lxml](https://github.com/lxml/lxml).


Updates `lxml` from 6.0.0 to 6.1.0
- [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-6.0.0...lxml-6.1.0)

---
updated-dependencies:
- dependency-name: lxml
  dependency-version: 6.1.0
  dependency-type: direct:production
  dependency-group: pip
...

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apps/api/requirements/base.txt

@@ -53,7 +53,7 @@ posthog==3.5.0
 # crypto
 cryptography==46.0.7
 # html validator
-lxml==6.0.0
+lxml==6.1.0
 # s3
 boto3==1.34.96
 # password validator