[ResponseOps][Reporting] Updating OS detection for Chromium (elastic#235620)

Resolves elastic/response-ops-team#399

## Summary

This PR updates the reporting screenshot check to
`--disable-setuid-sandbox`


### Checklist

Check the PR satisfies following conditions. 

Reviewers should verify this PR satisfies this list as well.

- [ ] [Unit or functional
tests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)
were updated or added to match the most common scenarios

### To verify

1. Create PDF, PDF for print, and PNG reports on cloud to verify that
screenshot reporting for linux is working as expected.

---------

Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com>

Author: doakalexi

src/platform/packages/private/kbn-screenshotting-server/src/args.ts

@@ -86,9 +86,5 @@ export const args = ({
     flags.push('--disable-gpu');
   }
 
-  if (os.arch() === 'linux') {
-    flags.push('--disable-setuid-sandbox');
-  }
-
   return [...flags, 'about:blank'];
 };