fix: handle uppercase encoding

[aurelienbottazini]

Fixes: #31

Makes sure encoded slashes and ampersand are not decoded by normalize in the url as those are reserved chars.
I also verified in the spec that %3f (question mark) is not decoded.

[codecov-commenter]

Codecov Report

Merging #32 (2ad3261) into main (9dbf95c) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main      #32   +/-   ##
=======================================
  Coverage   87.60%   87.60%           
=======================================
  Files           7        7           
  Lines         234      234           
  Branches       74       57   -17     
=======================================
  Hits          205      205           
  Misses         29       29           

Impacted Files	Coverage Δ
src/encoding.ts	97.43% <100.00%> (ø)

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[pi0]

Thanks for PR @aurelienbottazini <3 I've added i flag to other encoding regexes as well.

[aurelienbottazini]

You are welcome thanks for all your work ;)