Update protobuf files for stats for new trilean type

[bantonsson]

What does this PR do?

Updates protobuf files to match Datadog Agent.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 17 lines in your changes missing coverage. Please review.

Project coverage is 69.18%. Comparing base (b584007) to head (783cf63).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #480      +/-   ##
==========================================
- Coverage   69.21%   69.18%   -0.04%     
==========================================
  Files         195      195              
  Lines       26130    26144      +14     
==========================================
  Hits        18087    18087              
- Misses       8043     8057      +14     

Components	Coverage Δ
crashtracker	17.40% <ø> (ø)
datadog-alloc	98.76% <ø> (ø)
data-pipeline	51.30% <ø> (ø)
data-pipeline-ffi	0.00% <ø> (ø)
ddcommon	86.43% <ø> (ø)
ddcommon-ffi	74.15% <ø> (ø)
ddtelemetry	56.11% <ø> (ø)
ipc	84.53% <ø> (ø)
profiling	77.81% <ø> (ø)
profiling-ffi	59.53% <ø> (ø)
serverless	0.00% <ø> (ø)
sidecar	36.25% <ø> (ø)
sidecar-ffi	0.00% <ø> (ø)
spawn-worker	54.98% <ø> (ø)
trace-mini-agent	69.36% <ø> (ø)
trace-normalization	97.79% <ø> (ø)
trace-obfuscation	95.74% <ø> (ø)
trace-protobuf	24.52% <0.00%> (-8.81%)	⬇️
trace-utils	91.03% <ø> (ø)

[paullegranddc]

LGTM, but I don't quite get the change, because if the struct tags and enums are the same, this is basically a no-op in term of format.

[bantonsson]

@paullegranddc it is indeed a no-op on the wire, but the names have been changed in the Datadog Agent protobuf files, so our diff to make sure we don't miss new changes to the files will still fail.