dependency updates

[1-leo]

• updates dependencies
• replaces bip340 with our own version to support pointycastle4 (we need to wait before publishing git: not allowed)
• objectbox upgrades (previously blocked because of pointycastle4)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 71.52%. Comparing base (406a464) to head (7207e7e).
⚠️ Report is 5 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #226   +/-   ##
=======================================
  Coverage   71.52%   71.52%           
=======================================
  Files         125      125           
  Lines        4397     4397           
=======================================
  Hits         3145     3145           
  Misses       1252     1252           

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