pip: (deps): bump wagtail from 6.4 to 6.4.1

Bumps [wagtail](https://github.com/wagtail/wagtail) from 6.4 to 6.4.1.
- [Release notes](https://github.com/wagtail/wagtail/releases)
- [Changelog](https://github.com/wagtail/wagtail/blob/main/CHANGELOG.txt)
- [Commits](wagtail/wagtail@v6.4...v6.4.1)

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

Signed-off-by: dependabot[bot] <[email protected]>

requirements-prod.txt

@@ -85,7 +85,7 @@ typing_extensions==4.12.2
 uritemplate==4.1.1
 urllib3==2.3.0
 virtualenv==20.29.2
-wagtail==6.4
+wagtail==6.4.1
 wagtail_trash==3.1.0
 wagtail_modeladmin==2.1.0
 webencodings==0.5.1