update api level 21

[tdejoigny-ledger]

update api level 21, cherry pick:
Fix wrong bpp value when drawing radio buttons (9d30e84 )

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 71.42857% with 2 lines in your changes missing coverage. Please review.

Project coverage is 60.20%. Comparing base (603cf09) to head (a57f5d6).
Report is 12 commits behind head on API_LEVEL_21.

Files	Patch %	Lines
lib_nbgl/src/nbgl_obj.c	71.42%	2 Missing ⚠️

Additional details and impacted files

@@               Coverage Diff                @@
##           API_LEVEL_21     #726      +/-   ##
================================================
+ Coverage         60.19%   60.20%   +0.01%     
================================================
  Files                12       12              
  Lines              1726     1729       +3     
================================================
+ Hits               1039     1041       +2     
- Misses              687      688       +1     

Flag	Coverage Δ
unittests	60.20% <71.42%> (+0.01%)	⬆️

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