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.)

"TEST-UNEXPECTED-FAIL | test failed " +
              id +
              " | in " +
              browser +
              " | page" +
              (page + 1) +
              " round " +
              (round + 1) +
              " | " +
              pageResult.failure
          );
        }
      }
    });
  });
  if (failed) {
    return;
  }
  switch (task.type) {
    case "eq":
    case "text":
      checkEq(task, results, browser, session.masterMode);
      break;
    case "fbf":
      checkFBF(task, results, browser, session.masterMode);
      break;
    case "load":
      checkLoad(task, results, browser);
      break;
    default: