fix: assets ending in ".$OS.$ARCH" #356

Job	Run time
Alpine Linux	2m 9s
FreeBSD-x86_64 with rust stable	1m 0s
Linux-x86_64 with rust stable	2m 51s
Linux-x86_64 (rustls-native-roots) with rust stable	3m 10s
Linux-x86_64 (native-tls) with rust stable	3m 21s
Linux-x86_64 (native-tls-vendored) with rust stable	4m 10s
Linux-aarch64 with rust stable	2m 43s
Linux-arm with rust stable	2m 37s
Linux-i686 with rust stable	2m 2s
Linux-powerpc with rust stable	48s
Linux-powerpc64 with rust stable	1m 49s
Linux-powerpc64le with rust stable	1m 59s
Linux-riscv64 with rust stable	2m 25s
Linux-s390x with rust stable	1m 53s
NetBSD-x86_64 with rust stable	1m 55s
Windows-aarch64 with rust stable	1m 28s
Windows-i686 with rust stable	3m 11s
Windows-x86_64 with rust stable	6m 35s
macOS-x86_64 with rust stable	2m 8s
macOS-aarch64 with rust stable	1m 10s
Linux-x86_64 with rust beta	3m 46s
Linux-x86_64 with rust nightly	3m 31s
	56m 41s

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