chore: bump version to v5.4.3rc2 #107

Job	Run time
check-version	11s
frontend-tests / frontend-tests	1m 2s
python-checks / python-checks	53s
build / build-installer	1m 27s
frontend-checks / frontend-checks	1m 31s
python-tests / py3.10: linux-cuda-11_7	4m 0s
python-tests / py3.10: linux-rocm-5_2	5m 3s
python-tests / py3.10: linux-cpu	4m 25s
python-tests / py3.10: macos-default	3m 21s
python-tests / py3.10: windows-cpu	9m 17s
python-tests / py3.11: linux-cuda-11_7	4m 1s
python-tests / py3.11: linux-rocm-5_2	4m 8s
python-tests / py3.11: linux-cpu	3m 43s
python-tests / py3.11: macos-default	3m 2s
python-tests / py3.11: windows-cpu	7m 35s
publish-testpypi	19s
publish-pypi	20s
	54m 18s

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