Fix teamcity-messages for pylint >= 2.8

[Tirzono]

Pylint made changes so pylint.__pkginfo__.version does not exist anymore and can be accessed now by pylint.__pkginfo__.__version__. This PR makes sure it works for both pylint >= 2.8 and pylint < 2.8.

Related to pylint-dev/pylint#4399

[Tirzono]

The build is failing but I don't think this is an issue with the change I made, but rather with the fact that it's been a while that we've run tests for teamcity-messages and some thing got broken over time.

[kolibri91]

Can you please tell me in which version this fix will be released?

[Tirzono]

@mikekidya @throwable-one @madlexa would you be willing to have a look at this one? :)

[esztermarton]

Nice change! Here's the commit that caused this. Would be great to have a new version of tc messages with this!

[mikekidya]

Sorry for the delay and thank you for the PR, changes look cool to me.
According to JetBrains policies we can only accept PRs from contributors who signed JetBrains CLA. Could you please consider signing it?

[Tirzono]

Hi @mikekidya,

Thank you for your reply. I signed the JetBrains CLA. Please let me know if anything else is needed.

[Tirzono]

Hi @mikekidya,

Would it be possible to do a new release so I can update pylint again?