Fix curves

[cedelavergne-ledger]

Fix curves usage:

• Revert previous commit on buffer lengths checks because it impacts other curves
• Add secp256k1 in the menus
• Update snapshots accordingly

Checklist

• App update process has been followed
• Target branch is develop
• Application version has been bumped

[ledger-wiz-cspm-secret-detection]

Wiz Scan Summary

IaC Misconfigurations
Total
Secrets

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 27.01%. Comparing base (cd08b73) to head (dc6b525).

Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #102   +/-   ##
========================================
  Coverage    27.01%   27.01%           
========================================
  Files            1        1           
  Lines          211      211           
========================================
  Hits            57       57           
  Misses         154      154           

Flag	Coverage Δ
unittests	27.01% <ø> (ø)

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