fix(Icons): fixing errors with brand icons

[codepretty]

Updating stop-color and stop-opacity to stopColor and stopOpacity.

[codecov]

Codecov Report

Merging #1157 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1157   +/-   ##
=======================================
  Coverage   82.38%   82.38%           
=======================================
  Files         733      733           
  Lines        8720     8720           
  Branches     1230     1230           
=======================================
  Hits         7184     7184           
  Misses       1521     1521           
  Partials       15       15

Impacted Files	Coverage Δ
...eams/components/Icon/svg/icons/filesExcelBrand.tsx	100% <ø> (ø)	⬆️
...ms/components/Icon/svg/icons/filesOneNoteBrand.tsx	100% <ø> (ø)	⬆️
...components/Icon/svg/icons/filesPowerPointBrand.tsx	100% <ø> (ø)	⬆️
...teams/components/Icon/svg/icons/filesWordBrand.tsx	100% <ø> (ø)	⬆️

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