chore: release 0.12.3 #836

Job	Run time
docs	24s
clippy	1m 8s
doctest	1m 32s
feature-checks	3m 28s
test stable (ubuntu-latest)	1m 12s
fmt	13s
test stable --all-features (ubuntu-latest)	2m 15s
test 1.70 (ubuntu-latest)	41s
test stable (macos-latest)	1m 18s
test stable --all-features (macos-latest)	2m 52s
test 1.70 (macos-latest)	47s
test stable (windows-latest)	4m 29s
test stable --all-features (windows-latest)	4m 37s
test 1.70 (windows-latest)	3m 47s
	28m 43s

Provide feedback