Update dependencies to support Svelte 4.

Author: rudiv

package.json

@@ -85,13 +85,13 @@
   "types": "./dist/index.d.ts",
   "peerDependencies": {
     "@sveltejs/kit": "1.x",
-    "svelte": "3.x",
+    "svelte": "3.x || 4.x",
     "zod": "3.x"
   },
   "devDependencies": {
     "@sveltejs/adapter-auto": "^2.1.0",
-    "@sveltejs/kit": "^1.20.4",
-    "@sveltejs/package": "^2.0.2",
+    "@sveltejs/kit": "^1.20.5",
+    "@sveltejs/package": "^2.1.0",
     "@types/throttle-debounce": "^5.0.0",
     "@typescript-eslint/eslint-plugin": "^5.60.0",
     "@typescript-eslint/parser": "^5.60.0",
@@ -105,9 +105,9 @@
     "publint": "^0.1.12",
     "sass": "^1.63.4",
     "slugify": "^1.6.6",
-    "svelte": "^3.59.1",
-    "svelte-check": "^3.4.3",
-    "sveltekit-flash-message": "1.0.0-rc.3",
+    "svelte": "^3.59.1 || ^4.0.0",
+    "svelte-check": "^3.4.4",
+    "sveltekit-flash-message": "^1.0.0",
     "sveltekit-rate-limiter": "^0.1.8",
     "throttle-debounce": "^5.0.0",
     "tslib": "^2.5.3",