chore: release 0.12.5 #858

Job	Run time
clippy	1m 2s
docs	24s
doctest	1m 26s
feature-checks	3m 42s
fmt	13s
test stable (ubuntu-latest)	1m 6s
test stable --all-features (ubuntu-latest)	2m 16s
test 1.83 (ubuntu-latest)	1m 25s
test stable (macos-latest)	1m 32s
test stable --all-features (macos-latest)	2m 37s
test 1.83 (macos-latest)	1m 11s
test stable (windows-latest)	3m 29s
test stable --all-features (windows-latest)	5m 51s
test 1.83 (windows-latest)	3m 28s
	29m 42s

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