[Reporting] Add protocolTimeout to screenshotting plugin (elastic#167335

)

## Summary

Timeout settings for the screenshotting plugin that uses puppeteer is
facing an issue where the connection is closed too quickly for reporting
to work.

Test this fixes the protocolTimeout puppeteer with example plugin and
modifying the
x-pack/examples/reporting_example/public/containers/main.tsx useEffect.
  ```jsx 
useEffect(() => {
    Rx.timer(22000)
      .pipe(takeWhile(() => logos.length < sourceLogos.length))
      .subscribe(() => {
        setLogos([...sourceLogos.slice(0, logos.length + 1)]);
      });
  });
```

and then modifying the kibana.yml to `xpack.reporting.capture.timeouts.openUrl: 200000s` 

The report waits for all cards to load before capturing the screenshot

x-pack/plugins/screenshotting/server/browsers/chromium/driver_factory/index.ts

@@ -167,6 +167,7 @@ export class HeadlessChromiumDriverFactory {
               TZ: browserTimezone,
             },
             headless: 'new',
+            protocolTimeout: 0,
           });
         } catch (err) {
           observer.error(