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ARROW-8815: [Dev][Release] Binary upload script should retry on unexpected bintray request error

During uploading the binaries to bintray the script exited multiple times because of unhandled HTTP errors.

Closes #7192 from kszucs/ARROW-8815

Lead-authored-by: Sutou Kouhei <kou@clear-code.com>
Co-authored-by: Krisztián Szűcs <szucs.krisztian@gmail.com>
Signed-off-by: Sutou Kouhei <kou@clear-code.com>