Bump rupicola from `73addd2` to `d4a6c84` (#1858) #840

Job	Run time
install (dev, 4.11.1, Ubuntu, ubuntu-latest)	40m 35s
install (dev, 4.11.1, macOS, macos-latest)	53m 9s
install (dev, 4.11.1, Windows, windows-latest, -async-proofs-j 1, opam-repository-mingw: https://...	1h 35m 41s
install (8.19.0, 4.11.1, Ubuntu, ubuntu-latest)	39m 7s
install (8.19.0, 4.11.1, macOS, macos-latest)	48m 10s
install (8.19.0, 4.11.1, Windows, windows-latest, -async-proofs-j 1, opam-repository-mingw: https...	1h 34m 9s
install (8.18.0, 4.11.1, Ubuntu, ubuntu-latest)	40m 8s
install (8.18.0, 4.11.1, macOS, macos-latest)	49m 27s
install (8.18.0, 4.11.1, Windows, windows-latest, -async-proofs-j 1, opam-repository-mingw: https...	1h 39m 6s
	9h 19m 32s

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