librespeed-cli-rust: update to 0.1.1

librespeed-cli-rust: update to 0.1.1

Brings the client in line with the fixes merged into the Go client: --json and
--csv end with a newline, --debug names the address each ICMP ping reached and
the spread of the samples, and the User-Agent carries the operating system and
architecture. Also tolerates a backend that answers getIP.php with an empty
rawIspInfo, which previously discarded the whole response.

Signed-off-by: Josef Schlehofer <redacted>