SNOW-1524221 handle nested arrays

[sfc-gh-astachowski]

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Description

SNOW-1524221 Added handling of N-dimensional arrays for N>2 to stringToValue

Checklist

• [x] Created tests which fail without the change (if possible)
• [ ] Extended the README / documentation, if necessary

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[codecov[bot]]

Codecov Report

Attention: Patch coverage is 77.77778% with 2 lines in your changes missing coverage. Please review.

Project coverage is 83.16%. Comparing base (52590b9) to head (112ffe8). Report is 2 commits behind head on master.

Files	Patch %	Lines
converter.go	77.77%	2 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1176      +/-   ##
==========================================
- Coverage   83.16%   83.16%   -0.01%     
==========================================
  Files          54       54              
  Lines       12149    12158       +9     
==========================================
+ Hits        10104    10111       +7     
- Misses       2045     2047       +2     

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[sfc-gh-astachowski]

I have read the CLA Document and I hereby sign the CLA

[sfc-gh-astachowski]

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