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

Conflicts:
- `CHANGELOG.md`:
  Upstream added newlines.
  Conflicts are because the CHANGELOG was independently merged from 3.4.6 on
  last security update.
  Took upstream's version.
- `app/helpers/context_helper.rb`:
  Conflicts because of extra vocabulary in glitch-soc. The conflicts were
  actually handled in last security merge.
  Kept our version.

package.json

@@ -101,7 +101,7 @@
     "font-awesome": "^4.7.0",
     "glob": "^7.2.0",
     "history": "^4.10.1",
-    "http-link-header": "^1.0.3",
+    "http-link-header": "^1.0.4",
     "immutable": "^4.0.0",
     "imports-loader": "^1.2.0",
     "intersection-observer": "^0.12.0",
@@ -146,7 +146,7 @@
     "react-swipeable-views": "^0.14.0",
     "react-textarea-autosize": "^8.3.3",
     "react-toggle": "^4.1.2",
-    "redis": "^4.0.2",
+    "redis": "^4.0.3",
     "redux": "^4.1.2",
     "redux-immutable": "^4.0.0",
     "redux-thunk": "^2.4.1",