fix: add missing dockerfile deps

lib/playwright.ts

@@ -1,4 +1,4 @@
-import { chromium } from "npm:playwright-extra";
+import { firefox } from "npm:playwright-extra";
 import { createStreamResponse } from "@lib/helpers.ts";
 import StealthPlugin from "npm:puppeteer-extra-plugin-stealth";
 
@@ -9,7 +9,7 @@ const userAgentStrings = [
   "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36",
 ];
 
-chromium.use(StealthPlugin());
+firefox.use(StealthPlugin());
 
 export async function fetchHtmlWithPlaywright(
   fetchUrl: string,
@@ -17,7 +17,7 @@ export async function fetchHtmlWithPlaywright(
 ): Promise<string> {
   streamResponse.enqueue("booting up playwright");
   // Launch the Playwright browser
-  const browser = await chromium.launch();
+  const browser = await firefox.launch();
 
   streamResponse.enqueue("fetching html");