build(deps): bump wagtail from 4.1.9 to 6.2.2

Bumps [wagtail](https://github.com/wagtail/wagtail) from 4.1.9 to 6.2.2.
- [Release notes](https://github.com/wagtail/wagtail/releases)
- [Changelog](https://github.com/wagtail/wagtail/blob/main/CHANGELOG.txt)
- [Commits](wagtail/wagtail@v4.1.9...v6.2.2)

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

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

requirements.txt

@@ -115,7 +115,7 @@ django-contact-us==1.1.0
 entrypoints==0.4
 
 # wagtail requirements
-wagtail==4.1.9
+wagtail==6.2.2
 django-modelcluster>=6.0,<7.0
 django-permissionedforms>=0.1,<1.0
 django-taggit>=2.0,<7.0