Build(deps-dev): Bump phpstan/phpstan from 1.11.11 to 1.12.8 #1323

Job	Run time
Validate composer (8.1, highest)	7s
Linting (8.1)	12s
Linting (8.2)	34s
Linting (8.3)	12s
Static Code Analysis with PHPStan (8.1, locked)	18s
UnitTests with PHPUnit (8.1, highest)	19s
Check Coding Standards with PHPCS (8.1, highest)	21s
Static Code Analysis with PHPStan (8.2, locked)	23s
UnitTests with PHPUnit (8.2, highest)	15s
UnitTests with PHPUnit (8.3, highest)	14s
Static Code Analysis with PHPStan (8.3, locked)	18s
Check for Backward Compatibility breaks (8.1, highest)	20s
Install dependencies (8.1, lowest, false)	22s
Install dependencies (8.1, highest, false)	20s
Install dependencies (8.2, lowest, false)	16s
Install dependencies (8.2, highest, false)	13s
Install dependencies (8.3, lowest, false)	22s
Install dependencies (8.3, highest, false)	13s
Install dependencies (8.1, locked, false)	14s
Install dependencies (8.2, locked, false)	14s
Install dependencies (8.3, locked, false)	15s
Install dependencies (8.4, highest, true)	15s
Compare results with PHPUnit (8.1, highest)	34s
Code Coverage with PHPUnit (8.1, highest)	26s
Compare results with PHPUnit (8.2, highest)	19s
Code Coverage with PHPUnit (8.2, highest)	17s
Compare results with PHPUnit (8.3, highest)	18s
Code Coverage with PHPUnit (8.3, highest)	14s
	8m 25s

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