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

Conflicts:
- `config/webpack/shared.js`:
  Upstream has changed how Tesseract.js gets included and dropped a dependency.
  The conflict is caused by glitch-soc having different code due to its
  theming system.
  Ported upstream changes.
- `lib/mastodon/version.rb`:
  Upstream refactor/code style change in a place we replaced upstream's
  repo URL with ours.
  Ported upstram changes, keeping our repo URL.
- `yarn.lock`:
  Upstream dropped dependencies, one of which was textually too close to
  a glitch-soc-specific dependency. Not a real conflict.

app/controllers/concerns/cache_concern.rb

@@ -49,6 +49,6 @@ module CacheConcern
   end
 
   def cache_collection_paginated_by_id(raw, klass, limit, options)
-    cache_collection raw.cache_ids.paginate_by_id(limit, options), klass
+    cache_collection raw.cache_ids.to_a_paginated_by_id(limit, options), klass
   end
 end

app/controllers/concerns/challengable_concern.rb

@@ -32,7 +32,6 @@ module ChallengableConcern
     if params.key?(:form_challenge)
       if challenge_passed?
         session[:challenge_passed_at] = Time.now.utc
-        return
       else
         flash.now[:alert] = I18n.t('challenge.invalid_password')
         render_challenge

app/controllers/concerns/signature_verification.rb

@@ -131,7 +131,7 @@ module SignatureVerification
   end
 
   def verify_signature(account, signature, compare_signed_string)
-    if account.keypair.public_key.verify(OpenSSL::Digest::SHA256.new, signature, compare_signed_string)
+    if account.keypair.public_key.verify(OpenSSL::Digest.new('SHA256'), signature, compare_signed_string)
       @signed_request_account = account
       @signed_request_account
     end