chore(deps): update dependency marked to v18 (#172)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -54,7 +54,7 @@
 		"eslint-plugin-svelte": "^3.17.0",
 		"feed": "^5.2.0",
 		"globals": "^17.4.0",
-		"marked": "^17.0.5",
+		"marked": "^18.0.0",
 		"mode-watcher": "^1.1.0",
 		"octokit": "^5.0.5",
 		"posthog-js": "^1.364.7",