Format nostr submodule

[callebtc]

No description provided.

[codecov]

Codecov Report

Attention: 9 lines in your changes are missing coverage. Please review.

Comparison is base (a76f076) 67.97% compared to head (02ab558) 67.97%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #347   +/-   ##
=======================================
  Coverage   67.97%   67.97%           
=======================================
  Files          63       63           
  Lines        4834     4834           
=======================================
  Hits         3286     3286           
  Misses       1548     1548           

Files	Coverage Δ
cashu/nostr/delegation.py	80.00% <100.00%> (ø)
cashu/nostr/event.py	89.85% <ø> (ø)
cashu/nostr/message_type.py	92.30% <100.00%> (ø)
cashu/nostr/relay_manager.py	83.33% <ø> (ø)
cashu/nostr/client/cbc.py	48.00% <0.00%> (ø)
cashu/nostr/subscription.py	57.14% <50.00%> (ø)
cashu/nostr/pow.py	0.00% <0.00%> (ø)
cashu/nostr/bech32.py	53.40% <44.44%> (ø)

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