Also increase minimum Svelte version

Author: rgossiaux

package.json

@@ -57,7 +57,7 @@
     "prettier-plugin-svelte": "^2.4.0",
     "rehype-autolink-headings": "^6.1.1",
     "rehype-slug": "^5.0.1",
-    "svelte": "^3.44.0",
+    "svelte": "^3.47.0",
     "svelte-check": "^2.4.1",
     "svelte-inline-compile": "^0.0.1",
     "svelte-jester": "^2.1.5",