Upgrade Wagtail to 6.2.2

[JakubMastalerz]

Link to Ticket

Description of Changes Made

This PR will upgrade the Wagtail version to 6.2.2, as well as update additional dependencies to their up-to-date versions.

Wagtail 6.2 Upgrade Checklist

Use the tick box to indicate a consideration has been code reviewed as OK

• Specifying a dict of distribution IDs for CloudFront cache invalidation is deprecated

• Changes to permissions registration for models with ModelViewSet and SnippetViewSet

• Deprecation of WAGTAIL_USER_EDIT_FORM, WAGTAIL_USER_CREATION_FORM, and WAGTAIL_USER_CUSTOM_FIELDS settings

• Changes to report views with the new Universal Listings UI

• Deprecation of window.ActivateWorkflowActionsForDashboard and window.ActivateWorkflowActionsForEditView

MR Checklist

• Add a description of your pull request and instructions for the reviewer to verify your work.
• If your pull request is for a specific ticket, link to it in the description.
• Stay on point and keep it small so the merge request can be easily reviewed.
• Tests and linting passes.

Unit tests

• Added
• Not required

Documentation

• Updated build docs
• Updated editor guidelines (See https://intranet.torchbox.com/torchbox-com-project-docs for the private link, for Torchbox employees only)
• Updated field spec (See https://intranet.torchbox.com/torchbox-com-project-docs for the private link, for Torchbox employees only)
• Not required

Browser testing

• I have tested in the following browsers and environments (edit the list as required)
  • Latest version of Chrome on mac
  • Latest version of Firefox on mac
  • Latest version of Safari on mac
  • Safari on last two versions of iOS
  • Chrome on last two versions of Android
• Not required

Data protection

• Not relevant
• This adds new sources of PII and documents it and modifies Birdbath processors accordingly

Light and dark mode

• I have tested the changes in both light and dark mode
• The change is not relevant to dark and light mode

Accessibility

• Automated WCAG 2.1 tests pass
• HTML validation passes
• Manual WCAG 2.1 tests completed
• I have tested in a screen reader
• I have tested in high-contrast mode
• Any animations removed for prefers-reduced-motion
• Not required

Sustainability

• Images are optimised and lazy-loading used where appropriate
• SVGs have been optimised
• Perfomance and transfer of data considered
• If JavaScript is needed alternatives have been considered
• Not required

Pattern library

• The pattern library component for this template displays correctly, and does not break parent templates
• The styleguide is updated if relevant
• Changes are not relevant the pattern library