[TASK] Update phpstan/extension-installer to v1.4.2

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
phpstan/extension-installer	1.4.1 -> 1.4.2

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Release Notes

phpstan/extension-installer (phpstan/extension-installer)

### [`v1.4.2`](https://togithub.com/phpstan/extension-installer/releases/tag/1.4.2) [Compare Source](https://togithub.com/phpstan/extension-installer/compare/1.4.1...1.4.2) - [46c8219](http://github.com/phpstan/extension-installer/commit/46c8219b3fb0deb3fc08301e8f0797d321d17dcd) - Add keywords

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Configuration

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

🚦 Automerge: Enabled.

♻ 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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[renovate[bot]]

Branch automerge failure

This PR was configured for branch automerge. However, this is not possible, so it has been raised as a PR instead.

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• Branch has one or more failed status checks

[coveralls]

Pull Request Test Coverage Report for Build 10590991146

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 98.95%

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Totals
Change from base Build 10590868579:	0.0%
Covered Lines:	471
Relevant Lines:	476

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💛 - Coveralls

[codeclimate[bot]]

Code Climate has analyzed commit 87f97f6e 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 98.9% (0.0% change).

View more on Code Climate.