Update conference kit banners

Author: hasparus

package.json

@@ -75,6 +75,7 @@
     "playwright-core": "^1.54.2",
     "postcss": "^8.4.49",
     "postcss-import": "^16.1.1",
+    "qrcode": "^1.5.4",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
     "react-medium-image-zoom": "5.2.13",
@@ -105,6 +106,7 @@
     "@types/hast": "3.0.4",
     "@types/jsdom": "^21.1.7",
     "@types/node": "^22.10.5",
+    "@types/qrcode": "^1.5.6",
     "@types/react": "^18.3.23",
     "@types/rss": "0.0.32",
     "@types/string-similarity": "^4.0.2",