Change nvmrc from 8 to 10

[zoltanbedi]

Which problem is this PR solving?

• It solves the problem of building the repository. Running yarn on node 8 returns with an error.

error [email protected]: The engine "node" is incompatible with this module. Expected version ">=10.13.0". Got "8.17.0"
error Found incompatible module.

[codecov]

Codecov Report

Merging #712 (5080b8d) into master (0577ceb) will increase coverage by 0.03%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #712      +/-   ##
==========================================
+ Coverage   94.39%   94.42%   +0.03%     
==========================================
  Files         230      230              
  Lines        5959     5959              
  Branches     1448     1448              
==========================================
+ Hits         5625     5627       +2     
+ Misses        300      298       -2     
  Partials       34       34              

Impacted Files	Coverage Δ
...nents/TracePage/TraceTimelineViewer/SpanBarRow.tsx	79.31% <0.00%> (+6.89%)	⬆️

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[yurishkuro]

Makes sense, the CI also uses 10. Thanks!