Angular 11 upgrade

[olgapuig]

Angular 11 Upgrade
Guide: https://update.angular.io/?l=3&v=10.2-11.0

Use 'karma-coverage' because 'karma-coverage-istanbul-reporter' usage has been deprecated since version 11

[codecov]

Codecov Report

Merging #51 (0e37e43) into master (c10b56b) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master      #51   +/-   ##
=======================================
  Coverage   57.63%   57.63%           
=======================================
  Files           8        8           
  Lines         380      380           
  Branches       74       74           
=======================================
  Hits          219      219           
  Misses        129      129           
  Partials       32       32           

Impacted Files	Coverage Δ
...s/systelab-translate/src/lib/number-format.pipe.ts	100.00% <100.00%> (ø)

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[olgapuig]

The test execution fails because 'karma-coverage-istanbul-reporter' usage has been deprecated since version 11. I'm going to fix it.