fix: update go.bug.st/serial to v1.6.4 #362

Job	Run time
build (ubuntu-20.04, amd64)	39s
build (windows-2019, amd64)	3m 17s
build (macos-13, amd64)	2m 16s
build (windows-2019, 386, .exe)	2m 33s
create-macos-bundle (amd64)	10s
package (ubuntu-20.04, amd64)	38s
create-macos-bundle (arm64)	15s
package (windows-2019, amd64)	37s
package (windows-2019, 386, windows, windows, .exe, .exe)	36s
Notarize bundle (amd64)	1m 18s
Notarize bundle (arm64)	1m 16s
sign-windows (amd64)	20s
sign-windows (386)	23s
generate-sign-dmg (amd64)	1m 38s
create-release	30s
	16m 26s

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