update test packages

Author: simeydotme

test/package.json

@@ -12,7 +12,7 @@
     "@rollup/plugin-node-resolve": "^8.0.0",
     "rollup": "^2.3.4",
     "rollup-plugin-livereload": "^1.0.0",
-    "rollup-plugin-svelte": "^5.0.3",
+    "rollup-plugin-svelte": "^6.0.0",
     "rollup-plugin-terser": "^5.3.1",
     "svelte": "^3.0.0"
   },