composer(deps-dev): Bump rector/rector from 0.18.13 to 0.19.0 #1546

Job	Run time
Coding Standards (8.1, locked)	28s
Dependency Analysis (8.1, locked)	19s
Code Coverage (8.1, locked)	28s
Mutation Tests (8.1, locked)	35s
Backward-Compatibility Analysis (8.1, locked)	14s
Security Analysis (8.1, locked)	26s
Refactoring (8.1, locked)	26s
Static Code Analysis (8.1, locked)	24s
Tests (8.1, lowest)	18s
Tests (8.1, locked)	20s
Tests (8.1, highest)	30s
Tests (8.2, lowest)	27s
Tests (8.2, locked)	36s
Tests (8.2, highest)	32s
Tests (8.3, lowest)	15s
Tests (8.3, locked)	19s
Tests (8.3, highest)	21s
	6m 58s

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