Add shortWeekDays and shortMonths to pt_PT.ts

[rubenferreira97]

Adds missing translation for shortWeekDays and shortMonths, in portuguese (ptPT).

[vercel]

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[codecov]

Codecov Report

Merging #362 (5582154) into master (97e4bb1) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #362   +/-   ##
=======================================
  Coverage   99.53%   99.53%           
=======================================
  Files          46       46           
  Lines        2148     2148           
  Branches      633      633           
=======================================
  Hits         2138     2138           
  Misses          8        8           
  Partials        2        2           

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