22166: updated README to follow-up the switch from Bugcrowd to hackerone

[mautz-et-tong]

Description (*)

updated README to follow-up the switch from Bugcrowd to hackerone

Fixed Issues (if relevant)

1. Information and link in README.md file related to Security issue reporting should be updated #22166

Manual testing scenarios (*)

Read the new text, click the new links

Contribution checklist (*)

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• All automated tests passed successfully (all builds on Travis CI are green)

[m2-assistant]

Hi @mautz-et-tong. Thank you for your contribution
Here is some useful tips how you can test your changes using Magento test environment.
Add the comment under your pull request to deploy test or vanilla Magento instance:

• @magento-engcom-team give me test instance - deploy test instance based on PR changes
• @magento-engcom-team give me 2.3-develop instance - deploy vanilla Magento instance

For more details, please, review the Magento Contributor Assistant documentation

[magento-cicd2]

All committers have signed the CLA.

[magento-engcom-team]

Hi @orlangur, thank you for the review.
ENGCOM-4695 has been created to process this Pull Request

[magento-engcom-team]

@mautz-et-tong thank you for contributing. Please accept Community Contributors team invitation here to gain extended permissions for this repository.

[VasylShvorak]

Notice: QA not applicable

[m2-assistant]

Hi @mautz-et-tong, thank you for your contribution!
Please, complete Contribution Survey, it will take less than a minute.
Your feedback will help us to improve contribution process.