remove `SmallVec` and `LazyIndexMap` from json value #759

Job	Run time
build on ${{ matrix.os }} (${{ matrix.target }} - ${{ matrix.interpreter \|\| 'all' }}${{ (((matrix.os == 'linux') && format(' - {0}', (((matrix.manylinux == 'auto') && 'manylinux') \|\| matrix.manylinux))) \|\| '') }})	0s
build sdist	24s
build pgo-optimized on ${{ matrix.os }} / ${{ matrix.interpreter }}	0s
bench	1m 18s
fuzz on ubuntu	22s
fuzz skip	5m 26s
fuzz on macos	29s
lint	47s
resolve	11s
test jiter-python 3.13	1m 15s
test jiter-python 3.13t	59s
test build on ${{ matrix.target }}-${{ matrix.distro }}	0s
test build on ${{ matrix.os }}	0s
test rust-stable on ubuntu, Python 3.13	31s
test rust-stable on macos, Python 3.13	28s
test rust-1.75 on ubuntu, Python	26s
test rust-stable on ubuntu, Python 3.13t	31s
test rust-nightly on ubuntu, Python	53s
inspect-pypi-assets	0s
check	2s
release	0s
release-python	0s
	14m 2s

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