fix: build mesh-rt in release verifiers #60

Job	Run time
Build meshpkg (x86_64-unknown-linux-gnu)	42s
Build meshpkg (x86_64-apple-darwin)	1m 40s
Build meshpkg (aarch64-apple-darwin)	57s
Build meshpkg (x86_64-pc-windows-msvc)	1m 28s
Build meshpkg (aarch64-unknown-linux-gnu)	42s
Build (x86_64-pc-windows-msvc)	10m 48s
Build (x86_64-unknown-linux-musl)	8m 13s
Build (aarch64-apple-darwin)	2m 25s
Build (x86_64-apple-darwin)	6m 6s
Build (x86_64-unknown-linux-gnu)	8m 47s
Build (aarch64-unknown-linux-gnu)	2m 41s
Authoritative live proof	0s
Verify release assets (x86_64-apple-darwin)	1m 16s
Verify release assets (aarch64-unknown-linux-gnu)	25s
Verify release assets (x86_64-pc-windows-msvc)	38s
Verify release assets (x86_64-unknown-linux-gnu)	37s
Verify release assets (aarch64-apple-darwin)	33s
Create Release	0s
	47m 58s

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