[TASK] Update phpstan/phpstan-strict-rules to v1.6.1

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
phpstan/phpstan-strict-rules	1.6.0 -> 1.6.1

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Release Notes

phpstan/phpstan-strict-rules (phpstan/phpstan-strict-rules)

### [`v1.6.1`](https://redirect.github.com/phpstan/phpstan-strict-rules/releases/tag/1.6.1) [Compare Source](https://redirect.github.com/phpstan/phpstan-strict-rules/compare/1.6.0...1.6.1) - [daeec74](http://github.com/phpstan/phpstan-strict-rules/commit/daeec748b53de80a97498462513066834ec28f8b) - Check if treatPhpDocTypesAsCertain tip is enabled - [876574c](http://github.com/phpstan/phpstan-strict-rules/commit/876574c426cfc6531ef26c799d20f0cb97d82f48) - Fix build - [a567f7b](http://github.com/phpstan/phpstan-strict-rules/commit/a567f7b0e5dfe524cc84f177fe5ca2b81f49b92a) - Pin build-cs - [2462e57](http://github.com/phpstan/phpstan-strict-rules/commit/2462e578b2f9b89d0774d284d139d2cd702729bb) - Test newer PHP versions

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Configuration

📅 Schedule: Branch creation - "every weekday" (UTC), 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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[codeclimate[bot]]

Code Climate has analyzed commit b02a2f89 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 96.5% (0.0% change).

View more on Code Climate.

[coveralls]

Pull Request Test Coverage Report for Build 10963066825

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 96.523%

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Totals
Change from base Build 10943261072:	0.0%
Covered Lines:	2221
Relevant Lines:	2301

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💛 - Coveralls