Bump rector/rector from 1.2.8 to 1.2.9 #473

Job	Run time
Coding Standards	15s
Code Coverage / Code Coverage	46s
Lint root / Lint yaml & Composer (8.2)	10s
Dependency analysis / Dependency Analysis (8.2)	19s
Static analysis / Static Code Analysis (8.2)	35s
Unit test / Supported Versions Matrix	5s
Unit test / Tests (8.1, lowest)	36s
Unit test / Tests (8.1, locked)	17s
Unit test / Tests (8.1, highest)	41s
Unit test / Tests (8.2, lowest)	1m 4s
Unit test / Tests (8.2, locked)	12s
Unit test / Tests (8.2, highest)	1m 5s
Unit test / Tests (8.3, lowest)	1m 5s
Unit test / Tests (8.3, locked)	23s
Unit test / Tests (8.3, highest)	24s
Integration test / Supported Versions Matrix	3s
Integration test / Tests (8.1, lowest)	40s
Integration test / Tests (8.1, locked)	12s
Integration test / Tests (8.1, highest)	43s
Integration test / Tests (8.2, lowest)	32s
Integration test / Tests (8.2, locked)	13s
Integration test / Tests (8.2, highest)	20s
Integration test / Tests (8.3, lowest)	41s
Integration test / Tests (8.3, locked)	20s
Integration test / Tests (8.3, highest)	24s
	12m 5s

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