composer(deps-dev): Bump rector/rector from 1.2.8 to 1.2.9 #1904

Job	Run time
Coding Standards (8.1, locked)	20s
Code Coverage (8.1, locked)	15s
Dependency Analysis (8.1, locked)	21s
Backward-Compatibility Analysis (8.1, locked)	24s
Refactoring (8.1, locked)	15s
Security Analysis (8.1, locked)	15s
Static Code Analysis (8.1, locked)	31s
Tests (8.1, lowest)	23s
Tests (8.1, locked)	14s
Tests (8.1, highest)	15s
Tests (8.2, lowest)	18s
Tests (8.2, locked)	15s
Tests (8.2, highest)	16s
Tests (8.3, lowest)	17s
Tests (8.3, locked)	17s
Tests (8.3, highest)	18s
	4m 54s

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