composer(deps-dev): Bump rector/rector from 0.18.13 to 0.19.1 #2349

Job	Run time
Compile Phar (8.1, locked)	17s
Backward-Compatibility Analysis (8.1, locked)	22s
Coding Standards (8.1, locked)	16s
Dependency Analysis (8.1, locked)	17s
Mutation Tests (8.1, locked)	2m 9s
Code Coverage (8.1, locked)	28s
Refactoring (8.1, locked)	18s
Security Analysis (8.1, locked)	14s
Static Code Analysis (8.1, locked)	34s
Tests (8.1, lowest)	25s
Tests (8.1, locked)	25s
Tests (8.1, highest)	24s
Tests (8.2, lowest)	26s
Tests (8.2, locked)	25s
Tests (8.2, highest)	35s
Tests (8.3, lowest)	18s
Tests (8.3, locked)	20s
Tests (8.3, highest)	21s
	8m 34s

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