Bump rector/rector from 1.2.5 to 1.2.8 #175

Job	Run time
Debug	1s
Check files / Changed	11s
XML Syntax	0s
Composer / Validation	9s
Code-QL / Analyze (javascript)	1m 27s
PHPStan / Analyze (ubuntu-latest, 8.1)	3m 4s
PHPStan / Analyze (ubuntu-latest, 8.3)	2m 52s
PHP CS Fixer / Validation	3m 49s
PHP CS / Default	4m 35s
PHP CS / Ecg	2m 17s
PHP CS / PhpCompatibility	6m 18s
PHP Syntax	0s
Unit Tests (OpenMage)	0s
Unit Tests (Sonar)	0s
	24m 43s

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