chore: release 0.20.0 #25

Job	Run time
Build Windows desktop (portable)	16m 12s
Build static web panel	1m 47s
Build aarch64-apple-darwin	10m 3s
Build aarch64-unknown-linux-musl	6m 24s
Build x86_64-unknown-linux-musl	8m 6s
Build x86_64-apple-darwin	11m 26s
GitHub Release	11s
	54m 9s

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