bump to v2.2.1 #12

Job	Run time
build-windows (x86_64-pc-windows-gnu, x86_64, ubuntu-24.04)	8m 56s
build-macos-slices (aarch64-apple-darwin, arm, arm64, arm64-apple-darwin21.4)	8m 46s
build-linux (ubuntu-24.04-arm, aarch64)	9m 48s
build-windows (aarch64-pc-windows-msvc, arm64, windows-11-arm)	14m 10s
build-windows (i686-pc-windows-gnu, x86, ubuntu-24.04)	10m 10s
build-macos-slices (x86_64-apple-darwin, intel, x86_64, x86_64-apple-darwin21.4)	11m 13s
build-linux (ubuntu-24.04, x86_64)	11m 0s
build-macos-universal	1m 5s
build-windows-installer (x86_64)	39s
build-windows-installer (x86)	34s
build-windows-installer (arm64)	46s
release	18s
	1h 17m 25s

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