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

Conflicts:
- `app/controllers/settings/preferences_controller.rb`:
  Upstream dropping `digest` from notifications emails while we have more
  notification emails settings.
  Removed `digest` from our list while keeping our extra settings.
- `app/javascript/packs/admin.js`:
  Conflicts caused by glitch-soc's theming system.
  Applied the changes to `app/javascript/core/admin.js`.
- `app/views/settings/preferences/other/show.html.haml`:
  Upstream removed a setting close to a glitch-soc-only setting.
  Applied upstream's change.

Gemfile.lock

@@ -75,8 +75,8 @@ GEM
       minitest (>= 5.1)
       tzinfo (~> 2.0)
       zeitwerk (~> 2.3)
-    addressable (2.8.0)
-      public_suffix (>= 2.0.2, < 5.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     aes_key_wrap (1.1.0)
     airbrussh (1.4.1)
       sshkit (>= 1.6.1, != 1.7.0)
@@ -424,7 +424,7 @@ GEM
       concurrent-ruby (~> 1.0, >= 1.0.2)
       sidekiq (>= 3.5)
       statsd-ruby (~> 1.4, >= 1.4.0)
-    oj (3.13.20)
+    oj (3.13.21)
     omniauth (1.9.2)
       hashie (>= 3.4.6)
       rack (>= 1.6.2, < 3)
@@ -480,8 +480,8 @@ GEM
       pry (>= 0.13, < 0.15)
     pry-rails (0.3.9)
       pry (>= 0.10.4)
-    public_suffix (4.0.7)
-    puma (5.6.4)
+    public_suffix (5.0.0)
+    puma (5.6.5)
       nio4r (~> 2.0)
     pundit (2.2.0)
       activesupport (>= 3.0.0)