cargo: point `repository` metadata to clonable URLs (#1588) #2087

Job	Run time
build (1.65.0, thumbv7em-none-eabi)	1m 8s
build (1.65.0, wasm32-unknown-unknown)	1m 10s
minimal-versions	27s
build (stable, thumbv7em-none-eabi)	10s
build (stable, wasm32-unknown-unknown)	11s
test (1.65.0)	1m 9s
test (stable)	22s
	4m 37s

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