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

Conflicts:
- `app/controllers/home_controller.rb`:
  Upstream made it so `/web` is available to non-logged-in users
  and `/` redirects to `/web` instead of `/about`.
  Kept our version since glitch-soc's WebUI doesn't have what's
  needed yet and I think /about is still a much better landing
  page anyway.
- `app/models/form/admin_settings.rb`:
  Upstream added new settings, and glitch-soc had an extra setting.
  Not really a conflict.
  Added upstream's new settings.
- `app/serializers/initial_state_serializer.rb`:
  Upstream added a new `server` initial state object.
  Not really a conflict.
  Merged upstream's changes.
- `app/views/admin/settings/edit.html.haml`:
  Upstream added new settings.
  Not really a conflict.
  Merged upstream's changes.
- `app/workers/scheduler/feed_cleanup_scheduler.rb`:
  Upstream refactored that part and removed the file.
  Ported our relevant changes into `app/lib/vacuum/feeds_vacuum.rb`
- `config/settings.yml`:
  Upstream added new settings.
  Not a real conflict.
  Added upstream's new settings.

.github/workflows/build-image.yml

@@ -10,6 +10,9 @@ on:
     paths:
       - .github/workflows/build-image.yml
       - Dockerfile
+permissions:
+  contents: read
+
 jobs:
   build-image:
     runs-on: ubuntu-latest

.github/workflows/check-i18n.yml

@@ -9,6 +9,9 @@ on:
 env:
   RAILS_ENV: test
 
+permissions:
+  contents: read
+
 jobs:
   check-i18n:
     runs-on: ubuntu-latest

.github/workflows/linter.yml

@@ -55,7 +55,7 @@ jobs:
         with:
           node-version: 16.x
           cache: yarn
-      - name: Intall dependencies
+      - name: Install dependencies
         run: yarn install --frozen-lockfile
       - name: Set-up RuboCop Problem Mathcher
         uses: r7kamura/rubocop-problem-matchers-action@v1