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.

lib/tasks/emojis.rake

@@ -6,7 +6,7 @@ def gen_border(codepoint, color)
   doc = File.open(input) { |f| Nokogiri::XML(f) }
   svg = doc.at_css('svg')
   if svg.key?('viewBox')
-    view_box = svg['viewBox'].split(' ').map(&:to_i)
+    view_box = svg['viewBox'].split.map(&:to_i)
     view_box[0] -= 2
     view_box[1] -= 2
     view_box[2] += 4
@@ -36,7 +36,7 @@ end
 
 def codepoints_to_unicode(codepoints)
   if codepoints.include?(' ')
-    codepoints.split(' ').map(&:hex).pack('U*')
+    codepoints.split.map(&:hex).pack('U*')
   else
     [codepoints.hex].pack('U')
   end