Use the correct format when deserializing body field from logs

[RazvanRotari]

Fixes #2173

Changes

Use the correct format when serializing/deserializing body field from logs. Item inside arrays will not be wrapped inside a 'value' field.

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 79.2%. Comparing base (e524bdb) to head (533d66b).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #2178     +/-   ##
=======================================
- Coverage   79.2%   79.2%   -0.1%     
=======================================
  Files        121     121             
  Lines      20870   20870             
=======================================
- Hits       16534   16532      -2     
- Misses      4336    4338      +2     

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[lalitb]

Thanks @RazvanRotari. Nicely done.

[lalitb]

@RazvanRotari Can you fix the lint error, so this can be merged ?

error: for loop over a single element
   --> opentelemetry-proto/tests/grpc_build.rs:116:5
    |
116 | /     for path in ["common.v1.AnyValue.value"] {
117 | |         builder = builder
118 | |         .field_attribute(path, "#[cfg_attr(feature =\"with-serde\", serde(flatten, serialize_with = \"crate::proto::serializers::serializ...
119 | |     }
    | |_____^

[RazvanRotari]

@lalitb Fixed the lint.