temporary fix to use the Ed25519 type

[decentralgabe]

opened #520 to track undoing this

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 90.69767% with 4 lines in your changes are missing coverage. Please review.

Project coverage is 57.17%. Comparing base (6550aee) to head (8e5c687).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #521      +/-   ##
==========================================
+ Coverage   57.01%   57.17%   +0.15%     
==========================================
  Files          69       69              
  Lines        7614     7648      +34     
==========================================
+ Hits         4341     4372      +31     
- Misses       2521     2523       +2     
- Partials      752      753       +1     

Files	Coverage Δ
credential/integrity/jwt.go	48.22% <100.00%> (+1.69%)	⬆️
crypto/jwx/jwk.go	51.47% <100.00%> (+0.31%)	⬆️
cryptosuite/jws2020/jsonwebkey2020.go	49.66% <100.00%> (+2.90%)	⬆️
crypto/jwx/jwt.go	56.36% <78.95%> (+1.73%)	⬆️