composer(deps-dev): bump rector/rector from 1.2.3 to 1.2.4 #1597

Job	Run time
Coding Standards (8.1, locked)	17s
Code Coverage (8.1, locked)	25s
Backward-Compatibility Analysis (8.1, locked)	22s
Dependency Analysis (8.1, locked)	32s
Mutation Tests (8.1, locked)	25s
Refactoring (8.1, locked)	24s
Security Analysis (8.1, locked)	19s
Static Code Analysis (8.1, locked)	46s
Tests (8.1, lowest)	26s
Tests (8.1, locked)	22s
Tests (8.1, highest)	23s
Tests (8.2, lowest)	16s
Tests (8.2, locked)	21s
Tests (8.2, highest)	22s
Tests (8.3, lowest)	13s
Tests (8.3, locked)	15s
Tests (8.3, highest)	15s
	6m 23s

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