chore(deps): update dependency miniflare to v3

Author: renovate[bot]

package.json

@@ -20,7 +20,7 @@
 		"@sveltejs/adapter-cloudflare": "2.3.2",
 		"@sveltejs/kit": "1.22.5",
 		"less": "4.2.0",
-		"miniflare": "2.14.0",
+		"miniflare": "3.20230807.0",
 		"prettier": "2.8.8",
 		"prettier-plugin-svelte": "2.10.1",
 		"svelte": "3.59.2",