chore: Increase coverage and make codecov more precise

[tux-tn]

Hello

• fix: remove typo and remove unnecessary conditions from isTaxid for pt-BR locale
• tests: add more test cases in isTaxid for pt-BR locale
• chore: update CI config to allow more precise codecov coverage (show branches coverage on new Pull requests) by switch from lcov reporting to cobertura

Coverage diff:
Before

After

Checklist

• PR contains only changes related; no stray files, etc.
• README updated (where applicable)
• Tests written (where applicable)

[codecov]

Codecov Report

Merging #1658 (f8f95e3) into master (24b3fd3) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##            master     #1658    +/-   ##
==========================================
  Coverage   100.00%   100.00%            
==========================================
  Files          101       101            
  Lines         1854      1992   +138     
  Branches         0       449   +449     
==========================================
+ Hits          1854      1992   +138     

Impacted Files	Coverage Δ
src/lib/isTaxID.js	100.00% <100.00%> (ø)
src/lib/isIn.js	100.00% <0.00%> (ø)
src/lib/trim.js	100.00% <0.00%> (ø)
src/lib/isBIC.js	100.00% <0.00%> (ø)
src/lib/isEAN.js	100.00% <0.00%> (ø)
src/lib/isHSL.js	100.00% <0.00%> (ø)
src/lib/isInt.js	100.00% <0.00%> (ø)
src/lib/isJWT.js	100.00% <0.00%> (ø)
src/lib/isMD5.js	100.00% <0.00%> (ø)
src/lib/isURL.js	100.00% <0.00%> (ø)
... and 77 more

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[profnandaa]

Thanks for this @tux-tn !