feat: new AlgorithmMismatchError exception

[ixunio]

Raise AlgorithmMismatchError whenever decoding a JWT with a valid 'alg' algorithm but that cannot be processed by the JWS instance algorithm declaration. In the future, it will be possible to select multiple algorithms and their related key via a Registry object.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.81%. Comparing base (671f958) to head (f5cc1ee).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #31      +/-   ##
==========================================
+ Coverage   91.56%   91.81%   +0.25%     
==========================================
  Files          13       13              
  Lines         984      990       +6     
  Branches       75       75              
==========================================
+ Hits          901      909       +8     
+ Misses         58       57       -1     
+ Partials       25       24       -1     

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