Bump mypy from 1.19.1 to 1.20.2 #16597

Job	Run time
Pre-Setup global build settings	2s
Linter	38s
Generate llhttp sources	12s
Benchmark	11m 47s
Cython coverage (ubuntu)	1m 54s
Cython coverage (windows)	3m 1s
Autobahn testsuite (3.14, ubuntu)	12m 12s
Test (3.10, macos, false)	6m 41s
Test (3.10, Y, ubuntu, false)	5m 52s
Test (3.10, windows, false)	6m 27s
Test (3.11, ubuntu, false)	4m 29s
Test (3.11, windows, false)	5m 57s
Test (3.11, Y, ubuntu, false)	5m 30s
Test (3.12, ubuntu, false)	4m 27s
Test (3.12, Y, ubuntu, false)	6m 0s
Test (3.10, ubuntu, false)	4m 25s
Test (3.11, macos, false)	6m 57s
Test (3.14, windows, false)	6m 4s
Test (ubuntu, 3.14t, false)	4m 3s
Test (3.13, windows, false)	6m 11s
Test (3.12, macos, false)	6m 40s
Test (3.14, macos, false)	7m 40s
Test (3.13, macos, false)	6m 57s
Test (3.12, windows, false)	6m 43s
Test (3.13, Y, ubuntu, false)	5m 14s
Test (3.14, ubuntu, false)	5m 11s
Test (3.14, Y, ubuntu, false)	5m 59s
Test (pypy-3.11, Y, ubuntu, false)	8m 52s
Test (3.13, ubuntu, false)	4m 36s
check	5s
Pre-Deploy	0s
Build wheels on ${{ matrix.os }} ${{ matrix.qemu }} ${{ matrix.musl }}	0s
Deploy	0s
Tarball	0s
	2h 40m 46s

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