[TASK] Update eliashaeussler/phpstan-config to v2

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
eliashaeussler/phpstan-config	require-dev	major	^1.0 -> ^2.0

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Release Notes

eliashaeussler/phpstan-config

### [`v2.0.0`](https://togithub.com/eliashaeussler/phpstan-config/releases/tag/2.0.0) [Compare Source](https://togithub.com/eliashaeussler/phpstan-config/compare/1.1.0...2.0.0) #### What's Changed ##### ⚡ Breaking - \[BUGFIX] Configure analyzed paths as absolute paths by [@​eliashaeussler](https://togithub.com/eliashaeussler) in [https://github.com/eliashaeussler/phpstan-config/pull/10](https://togithub.com/eliashaeussler/phpstan-config/pull/10) **Full Changelog**: https://github.com/eliashaeussler/phpstan-config/compare/1.1.0...2.0.0

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Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

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• [ ] If you want to rebase/retry this PR, check this box

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[codeclimate[bot]]

Code Climate has analyzed commit b441ebf1 and detected 0 issues on this pull request.

The test coverage on the diff in this pull request is 100.0% (50% is the threshold).

This pull request will bring the total coverage in the repository to 99.6% (0.0% change).

View more on Code Climate.