Conflicts:
- `Gemfile.lock`:
Conflict caused by the `json` gem thing once again.
Updated as upstream did, but keeping the most recent `json` version.
- `spec/helpers/application_helper_spec.rb`:
Upstream refactored a bunch of specs, including one place that differs
because of glitch-soc's theming system.
Refactored as upstream did, adapting it for glitch-soc's theming system.