Bump rector/rector from 1.2.7 to 1.2.8 #470

Job	Run time
Coding Standards	19s
Code Coverage / Code Coverage	38s
Dependency analysis / Dependency Analysis (8.2)	18s
Lint root / Lint yaml & Composer (8.2)	9s
Static analysis / Static Code Analysis (8.2)	51s
Unit test / Supported Versions Matrix	3s
Unit test / Tests (8.1, lowest)	49s
Unit test / Tests (8.1, locked)	20s
Unit test / Tests (8.1, highest)	31s
Unit test / Tests (8.2, lowest)	44s
Unit test / Tests (8.2, locked)	17s
Unit test / Tests (8.2, highest)	30s
Unit test / Tests (8.3, lowest)	44s
Unit test / Tests (8.3, locked)	21s
Unit test / Tests (8.3, highest)	1m 13s
Integration test / Supported Versions Matrix	2s
Integration test / Tests (8.1, lowest)	17s
Integration test / Tests (8.1, locked)	10s
Integration test / Tests (8.1, highest)	18s
Integration test / Tests (8.2, lowest)	19s
Integration test / Tests (8.2, locked)	12s
Integration test / Tests (8.2, highest)	33s
Integration test / Tests (8.3, lowest)	19s
Integration test / Tests (8.3, locked)	12s
Integration test / Tests (8.3, highest)	19s
	10m 28s

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