Update .NET SDK to 7.0.200

[atifaziz]

This PR updates global.json to require .NET SDK 7.0.200.

[codecov]

Codecov Report

Merging #967 (a1dfc0f) into master (1ef3753) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

❗ Current head a1dfc0f differs from pull request most recent head 3052753. Consider uploading reports for the commit 3052753 to get more accurate results

@@            Coverage Diff             @@
##           master     #967      +/-   ##
==========================================
- Coverage   92.49%   92.49%   -0.01%     
==========================================
  Files         113      113              
  Lines        3426     3424       -2     
  Branches     1024     1024              
==========================================
- Hits         3169     3167       -2     
  Misses        192      192              
  Partials       65       65              

Impacted Files	Coverage Δ
MoreLinq/ToDataTable.cs	96.80% <100.00%> (-0.07%)	⬇️

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