support custom binaries in contrib.url #9628

Job	Run time
MacOS (macOS-15-intel)	1h 2m 27s
Windows (installer, arm)	24m 43s
Windows (check, intel)	52m 9s
Windows (check, arm)	55m 14s
MacOS (macOS-15)	29m 14s
Linux (clang, debian:stable, arm)	32m 35s
Windows (installer, intel)	23m 22s
Linux (gcc, debian:stable, intel)	31m 49s
Linux (clang, debian:stable, intel)	33m 48s
Linux (gcc, debian:testing, intel)	34m 3s
Linux (gcc, debian:stable, arm)	33m 27s
Linux (clang, debian:testing, arm)	32m 23s
Linux (gcc, debian:testing, arm)	32m 36s
Linux (clang, debian:testing, intel)	32m 0s
	8h 29m 50s

Provide feedback