Update AllureSpock.java for Spock V2 and above

[Guter1988]

Context

This is a fix for Spock version 2 and above

fixes #510

Checklist

• Sign Allure CLA
• Provide unit tests

[CLAassistant]

All committers have signed the CLA.

[Guter1988]

Hello @baev
Can you please take a look and this pull request? This is a fix for the Spock version above 2

[baev]

@Guter1988 could you please fix the build?

[Guter1988]

@baev On it

[baev]

@Guter1988 build failure

[Guter1988]

@baev I saw. Thanks.
Added @SuppressWarnings("unchecked")
Let's see now

[Guter1988]

@baev Question: I had issue with io.netty:netty-transport-native-kqueue version 78. I have added late dependency 4.1.8410Final at Gradle, and it worked.
My question is - create a new pull request with adding dependency("io.netty:netty-transport-native-kqueue:4.1.84.Final")?

[Guter1988]

@baev All passed? Need to review now?

[baev]

@Guter1988 I did additional research and since spock2 is based on top of junit-platform we need to introduce separate module for spock2 integration so we can test it properly.

Let me take this task from here, you may expect a new release with support for spock2 later this week

Thanks for all the work anyway

[Guter1988]

Thank you @baev