composer(deps-dev): Bump rector/rector from 0.18.13 to 0.19.1 #920

Job	Run time
Code Coverage (8.1, locked)	22s
Dependency Analysis (8.1, locked)	19s
Coding Standards (8.1, locked)	32s
Backward-Compatibility Analysis (8.1, locked)	30s
Mutation Tests (8.1, locked)	44s
Refactoring (8.1, locked)	21s
Security Analysis (8.1, locked)	25s
Static Code Analysis (8.1, locked)	36s
Tests (8.1, lowest)	20s
Tests (8.1, locked)	20s
Tests (8.1, highest)	18s
Tests (8.2, lowest)	29s
Tests (8.2, locked)	18s
Tests (8.2, highest)	34s
Tests (8.3, lowest)	21s
Tests (8.3, locked)	17s
Tests (8.3, highest)	29s
	7m 15s

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