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

Conflicts:
- `README.md`:
  Upstream changed their README, we have our own.
  Kept ours.
- `app/helpers/application_helper.rb`:
  Minor code style fix upstream, on a line that is different in glitch-soc
  due to the different theming system.
  Applied the code style fix to our own code.
- `app/views/settings/preferences/appearance/show.html.haml`:
  Code style fix on a line next to lines exclusive to glitch-soc.
  Applied upstream changes.
- `yarn.lock`:
  Upstream updated a dependency textually close to a glitch-soc-only
  dependency.
  Updated the dependency like upstream did.

Gemfile.lock

@@ -73,7 +73,6 @@ GEM
       activemodel (>= 4.1, < 7.1)
       case_transform (>= 0.2)
       jsonapi-renderer (>= 0.1.1.beta1, < 0.3)
-    active_record_query_trace (1.8)
     activejob (6.1.7.3)
       activesupport (= 6.1.7.3)
       globalid (>= 0.3.6)
@@ -149,9 +148,6 @@ GEM
       concurrent-ruby (~> 1.0, >= 1.0.5)
       redis (>= 1.0, < 6)
     builder (3.2.4)
-    bullet (7.0.7)
-      activesupport (>= 3.0.0)
-      uniform_notifier (~> 1.11)
     bundler-audit (0.9.1)
       bundler (>= 1.2.0, < 3)
       thor (~> 1.0)
@@ -524,7 +520,7 @@ GEM
       rack (>= 2.1.0)
     rack-proxy (0.7.6)
       rack
-    rack-test (2.0.2)
+    rack-test (2.1.0)
       rack (>= 1.3)
     rails (6.1.7.3)
       actioncable (= 6.1.7.3)
@@ -729,7 +725,6 @@ GEM
       unf_ext
     unf_ext (0.0.8.2)
     unicode-display_width (2.4.2)
-    uniform_notifier (1.16.0)
     uri (0.12.0)
     validate_email (0.1.6)
       activemodel (>= 3.0)
@@ -774,7 +769,6 @@ PLATFORMS
 
 DEPENDENCIES
   active_model_serializers (~> 0.10)
-  active_record_query_trace (~> 1.8)
   addressable (~> 2.8)
   annotate (~> 3.2)
   aws-sdk-s3 (~> 1.119)
@@ -784,7 +778,6 @@ DEPENDENCIES
   bootsnap (~> 1.16.0)
   brakeman (~> 5.4)
   browser
-  bullet (~> 7.0)
   bundler-audit (~> 0.9)
   capistrano (~> 3.17)
   capistrano-rails (~> 1.6)
@@ -859,7 +852,7 @@ DEPENDENCIES
   rack (~> 2.2.6)
   rack-attack (~> 6.6)
   rack-cors (~> 1.1)
-  rack-test (~> 2.0)
+  rack-test (~> 2.1)
   rails (~> 6.1.7)
   rails-controller-testing (~> 1.0)
   rails-i18n (~> 6.0)