Php8 support

[ihor-sviziev]

As MFTF is one of the requirements for Magento 2 - as part of the php8 project we should add compatibility for MFTF.

~ composer why-not php 8

magento/magento2-functional-testing-framework  3.4.0   requires  php (^7.3)
csharpru/vault-php                             4.2.0   requires  php (^7.2)
doctrine/cache                                 v1.6.2  requires  php (~5.5|~7.0)
goaop/framework                                2.3.4   requires  php (~7.0)

• ❌ csharpru/vault-php there no available version with PHP 8 support PHP8 Support CSharpRU/vault-php#47
• ✔ doctrine/cache has PHP 8 support since version 1.10.1
• ❌ goaop/framework there no available version with PHP 8 support PHP 8 Compatibility goaop/framework#466

Preconditions

Steps to reproduce

Expected result

Actual result

1. [Logs, Errors]

[m2-assistant]

Hi @ihor-sviziev. Thank you for your report.
To help us process this issue please make sure that you provided sufficient information.

Please, add a comment to assign the issue: @magento I am working on this

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[jilu1]

@ihor-sviziev
Thank you for your PR and just want to update you that we will have a epic related to PHP8 support. The work is on going.

[CSharpRU]

csharpru/vault-php updated with PHP8 support (4.2.1 tag)