update frontend and switch sanitize library

frontend/svelte.config.js

@@ -1,6 +1,5 @@
-import preprocess from 'svelte-preprocess'
 import adapter from '@sveltejs/adapter-static'
-import precompileIntl from 'svelte-intl-precompile/sveltekit-plugin'
+import preprocess from 'svelte-preprocess'
 
 export default {
 	preprocess: preprocess(),
@@ -9,10 +8,5 @@ export default {
 		adapter: adapter({
 			fallback: 'index.html',
 		}),
-		vite: {
-			plugins: [
-				precompileIntl('locales'), // if your translations are defined in /locales/[lang].json
-			],
-		},
 	},
 }