Merge branch 'main' into glitch-soc/merge-upstream

Conflicts:
- `.prettierignore`:
  Upstream added a line at the end of the file, while glitch-soc had its own
  extra lines.
  Took upstream's change.
- `CONTRIBUTING.md`:
  We have our custom CONTRIBUTING.md quoting upstream. Upstream made changes.
  Ported upstream changes.
- `app/controllers/application_controller.rb`:
  Upstream made code style changes in a method that is entirely replaced
  in glitch-soc.
  Ignored the change.
- `app/models/account.rb`:
  Code style changes textually close to glitch-soc-specific changes.
  Ported upstream changes.
- `lib/sanitize_ext/sanitize_config.rb`:
  Upstream code style changes.
  Ignored them.

lib/sanitize_ext/sanitize_config.rb

@@ -106,17 +106,17 @@ class Sanitize
 
       attributes: merge(
         RELAXED[:attributes],
-        'audio'  => %w(controls),
-        'embed'  => %w(height src type width),
+        'audio' => %w(controls),
+        'embed' => %w(height src type width),
         'iframe' => %w(allowfullscreen frameborder height scrolling src width),
         'source' => %w(src type),
-        'video'  => %w(controls height loop width),
-        'div'    => [:data]
+        'video' => %w(controls height loop width),
+        'div' => [:data]
       ),
 
       protocols: merge(
         RELAXED[:protocols],
-        'embed'  => { 'src' => HTTP_PROTOCOLS },
+        'embed' => { 'src' => HTTP_PROTOCOLS },
         'iframe' => { 'src' => HTTP_PROTOCOLS },
         'source' => { 'src' => HTTP_PROTOCOLS }
       )