upgrade grpcbox and log errors returned during export

[tsloughter]

No description provided.

[codecov]

Codecov Report

Merging #226 (2054f75) into main (ac9b612) will decrease coverage by 0.03%.
The diff coverage is 25.00%.

@@            Coverage Diff             @@
##             main     #226      +/-   ##
==========================================
- Coverage   34.81%   34.77%   -0.04%     
==========================================
  Files          37       37              
  Lines        3045     3051       +6     
==========================================
+ Hits         1060     1061       +1     
- Misses       1985     1990       +5     

Flag	Coverage Δ
api	61.11% <ø> (ø)
elixir	18.05% <ø> (ø)
erlang	34.62% <25.00%> (-0.04%)	⬇️
exporter	19.48% <25.00%> (-0.06%)	⬇️
sdk	77.47% <ø> (+0.18%)	⬆️

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Impacted Files	Coverage Δ
...ntelemetry_exporter/src/opentelemetry_exporter.erl	75.37% <25.00%> (-3.54%)	⬇️
apps/opentelemetry/src/otel_batch_processor.erl	67.34% <0.00%> (+1.02%)	⬆️

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