Fix big nums in liq service

[adamgoth]

No description provided.

[codecov]

Codecov Report

Merging #310 (d18d0ae) into dev (de5d3fe) will not change coverage.
The diff coverage is 100.00%.

❗ Current head d18d0ae differs from pull request most recent head bf7ac19. Consider uploading reports for the commit bf7ac19 to get more accurate results

@@           Coverage Diff           @@
##              dev     #310   +/-   ##
=======================================
  Coverage   86.08%   86.08%           
=======================================
  Files         139      139           
  Lines        6344     6344           
  Branches     1259     1259           
=======================================
  Hits         5461     5461           
  Misses        878      878           
  Partials        5        5           

Impacted Files	Coverage Δ
.../dai-plugin-liquidations/src/LiquidationService.ts	85.71% <100.00%> (ø)

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