chore: update proto definition to v1.3.2

[lalitb]

Changes

Just a routine update, even though it doesn't bring any change for all the 3 signals. Only change is in profiles proto file which doesn't affect us.

https://github.com/open-telemetry/opentelemetry-proto/releases/tag/v1.3.2

Merge requirement checklist

• CONTRIBUTING guidelines followed
• Unit tests added/updated (if applicable)
• Appropriate CHANGELOG.md files updated for non-trivial, user-facing changes
• Changes in public API reviewed (if applicable)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 74.9%. Comparing base (acd6cbe) to head (902aeca).

Additional details and impacted files

@@          Coverage Diff          @@
##            main   #1945   +/-   ##
=====================================
  Coverage   74.9%   74.9%           
=====================================
  Files        122     122           
  Lines      20370   20370           
=====================================
+ Hits       15272   15273    +1     
+ Misses      5098    5097    -1     

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