chore(deps): update dependency phpstan/phpstan to v1.12.8 #42764

Job	Run time
Lint: ClientPrint (ESLint)	18s
api-check-needed	7s
e2e-check-needed	3s
frontend-check-needed	5s
Tests: PDF	27s
Lint: Print (ESLint)	33s
Tests: Print	58s
Tests: Frontend	0s
Lint: Frontend (ESLint)	0s
Lint: e2e (ESLint)	24s
Tests: End-to-end build / Tests: End-to-end (build job)	44s
Tests: API	2m 29s
Lint: API (php-cs-fixer)	43s
Tests: End-to-end run / Tests: End-to-end (chrome)	4m 32s
Tests: End-to-end run / Tests: End-to-end (firefox)	4m 59s
Tests: End-to-end run / Tests: End-to-end (edge)	4m 13s
Finish coveralls report	0s
workflow-success	4s
Send out CI success event	0s
	20m 39s

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