Bump mypy from 1.18.1 to 1.18.2 #8234

Job	Run time
Docs Checks	41s
CPython pypy-3.10-ubuntu-latest	12m 41s
CPython 3.13t-ubuntu-latest	11m 37s
static	3m 4s
Test using minimum dependencies and supported Python	39s
Test async's minimum dependencies and Python	40s
CPython 3.9-ubuntu-latest	11m 31s
DocTest	1m 0s
Link Check	4m 43s
Typing Tests (3.11)	48s
Typing Tests (3.9)	54s
Make an sdist	14s
Install from SDist and Test	1m 8s
	49m 40s

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