To use Puppeteer in your project, add these build settings to your trigger.config.ts file:
trigger.config.ts
import { defineConfig } from "@trigger.dev/sdk/v3";
import { puppeteer } from "@trigger.dev/build/extensions/puppeteer";

export default defineConfig({
  project: "<project ref>",
  // Your other config settings...
  build: {
    extensions: [puppeteer()],
  },
});
And add the following environment variable in your Trigger.dev dashboard on the Environment Variables page: 
PUPPETEER_EXECUTABLE_PATH: "/usr/bin/google-chrome-stable",
Follow this example to get setup with Trigger.dev and Puppeteer in your project.