Bump phpstan/phpstan from 1.12.6 to 1.12.7 #469

Job	Run time
Coding Standards	20s
Code Coverage / Code Coverage	19s
Lint root / Lint yaml & Composer (8.2)	8s
Static analysis / Static Code Analysis (8.2)	28s
Dependency analysis / Dependency Analysis (8.2)	16s
Unit test / Supported Versions Matrix	2s
Unit test / Tests (8.1, lowest)	40s
Unit test / Tests (8.1, locked)	36s
Unit test / Tests (8.1, highest)	28s
Unit test / Tests (8.2, lowest)	55s
Unit test / Tests (8.2, locked)	14s
Unit test / Tests (8.2, highest)	32s
Unit test / Tests (8.3, lowest)	1m 9s
Unit test / Tests (8.3, locked)	18s
Unit test / Tests (8.3, highest)	56s
Integration test / Supported Versions Matrix	7s
Integration test / Tests (8.1, lowest)	32s
Integration test / Tests (8.1, locked)	11s
Integration test / Tests (8.1, highest)	19s
Integration test / Tests (8.2, lowest)	21s
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)	17s
Integration test / Tests (8.3, highest)	19s
	10m 31s

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