Upgrade 0Chain GoSDK to v1.8.5

[service-0chain]

0Chain GoSDK v1.8.5 is released.
see full changelog on https://github.com/0chain/gosdk/releases/tag/v1.8.5

[codecov-commenter]

Codecov Report

Merging #750 (ba240f0) into staging (b4571ea) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           staging     #750   +/-   ##
========================================
  Coverage    24.01%   24.01%           
========================================
  Files           68       68           
  Lines         7653     7653           
========================================
  Hits          1838     1838           
  Misses        5548     5548           
  Partials       267      267           

Flag	Coverage Δ
Unit-Tests	24.01% <ø> (ø)

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