fix: upload checksums.txt as artifact for formula updates #7

Job	Run time
Build Windows Binary	21s
Build Binaries (linux, amd64, wt-linux-amd64, x86_64_linux)	13s
Build Binaries (darwin, arm64, wt-darwin-arm64, arm64_sonoma)	19s
Build Binaries (darwin, amd64, wt-darwin-amd64, ventura)	22s
Build Binaries (linux, arm64, wt-linux-arm64, aarch64_linux)	16s
Create Release	13s
Update Homebrew Formula	5s
	1m 49s

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