Upgrade 0Chain GoSDK to sprint-1.18

[service-0chain]

0Chain GoSDK sprint-1.18 is released. see full changelog on https://github.com/0chain/gosdk/releases/tag/sprint-1.18

[codecov-commenter]

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Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 14.00%. Comparing base (3145bbe) to head (ecd5342). Report is 105 commits behind head on sprint-1.18.

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Additional details and impacted files

@@               Coverage Diff               @@
##           sprint-1.18    #1493      +/-   ##
===============================================
+ Coverage        13.76%   14.00%   +0.23%     
===============================================
  Files              180      179       -1     
  Lines            21853    21523     -330     
===============================================
+ Hits              3009     3015       +6     
+ Misses           18464    18128     -336     
  Partials           380      380              

Flag	Coverage Δ
Unit-Tests	14.00% <ø> (+0.23%)	:arrow_up:

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