[upd] themes/simple: Bump rolldown-vite from 7.1.17 to 7.1.19 (#5351)

This security update does nothing but creating a new commit to build a container
with the new `base` image.

client/simple/package.json

@@ -45,7 +45,7 @@
     "stylelint-prettier": "~5.0.3",
     "svgo": "~4.0.0",
     "typescript": "~5.9.3",
-    "vite": "npm:rolldown-vite@7.1.17",
+    "vite": "npm:rolldown-vite@7.1.19",
     "vite-bundle-analyzer": "~1.2.3"
   }
 }