dataclass serialization speedups #4228

Job	Run time
build pgo-optimized on ${{ matrix.os }} / ${{ matrix.interpreter }}	0s
rust benchmarks	3m 13s
build on ${{ matrix.os }} (${{ matrix.target }} - ${{ matrix.interpreter \|\| 'all' }}${{ (((matrix.os == 'linux') && format(' - {0}', (((matrix.manylinux == 'auto') && 'manylinux') \|\| matrix.manylinux))) \|\| '') }})	0s
build sdist	12s
coverage	2m 8s
build-wasm-emscripten	2m 26s
test-debug 3.11	56s
lint	57s
test on ubuntu	2m 5s
test-debug pypy3.10	1m 18s
test on macos	4m 5s
test on windows	4m 34s
test-pydantic-integration	1m 31s
test 3.8	2m 0s
test 3.9	2m 6s
test 3.10	2m 27s
test 3.11	2m 17s
test 3.12	2m 16s
test pypy3.9	2m 25s
test pypy3.10	2m 42s
test build on ${{ matrix.target }}-${{ matrix.distro }}	0s
test build on ${{ matrix.os }}	0s
inspect-pypi-assets	0s
check	4s
release	0s
	39m 42s

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