As can be seen from the first round of testing in PR #15864, trying to update Puppeteer beyond version `19.0.0` completely breaks testing in Firefox. Curiously it does work locally when the `--noChrome` flag is being used, so it seems to be an issue with running tests in both Chrome *and* Firefox in parallel.

We need to fix this, likely by making some adjustments to our test-suite, such that we don't get "stuck" on an older version of Puppeteer without being able to update. (A temporary work-around could also be to disable testing in Chrome.)

yargs
    .usage("Usage: $0")
    .option("downloadOnly", {
      default: false,
      describe: "Download test PDFs without running the tests.",
      type: "boolean",
    })
    .option("fontTest", {
      default: false,
      describe: "Run the font tests.",
      type: "boolean",
    })
    .option("help", {
      alias: "h",
      default: false,
      describe: "Show this help message.",
      type: "boolean",
    })
    .option("integration", {