Governance app/update auths snapshots

[soerenbf]

Changes

• Enables updating snapshots to make it easier to make tests pass when UI changes are introduced
• Adds snapshots for all pages for the update authorizations chain update.

Checklist

• My code follows the style of this project.
• The code compiles without warnings.
• I have performed a self-review of the changes.
• I have documented my code, in particular the intent of the
  hard-to-understand areas.
• (If necessary) I have updated the CHANGELOG.