fix(icons): update Office brand icons

[notandrew]

Updaing file & app Office icons to the latest versions.

before:

after:

[codecov]

Codecov Report

Merging #1954 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #1954      +/-   ##
==========================================
+ Coverage   70.26%   70.26%   +<.01%     
==========================================
  Files         893      894       +1     
  Lines        7893     7894       +1     
  Branches     2310     2286      -24     
==========================================
+ Hits         5546     5547       +1     
  Misses       2334     2334              
  Partials       13       13

Impacted Files	Coverage Δ
...teams/components/Icon/svg/icons/filesWordBrand.tsx	100% <ø> (ø)	⬆️
...ms/components/Icon/svg/icons/filesOneNoteBrand.tsx	100% <ø> (ø)	⬆️
...eams/components/Icon/svg/icons/filesExcelBrand.tsx	100% <ø> (ø)	⬆️
...components/Icon/svg/icons/filesPowerPointBrand.tsx	100% <ø> (ø)	⬆️
...mes/teams/components/Icon/svg/icons/filesExcel.tsx	100% <100%> (ø)	⬆️
...mes/teams/components/Icon/svg/icons/filesVisio.tsx	100% <100%> (ø)	⬆️
...s/teams/components/Icon/svg/icons/filesOneNote.tsx	100% <100%> (ø)	⬆️
...eams/components/Icon/svg/icons/filesVisioBrand.tsx	100% <100%> (ø)
.../themes/teams/components/Icon/svg/icons/yammer.tsx	100% <100%> (ø)	⬆️
...hemes/teams/components/Icon/svg/icons/oneDrive.tsx	100% <100%> (ø)	⬆️
... and 3 more

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