Fix CI lint errors from new stable toolchain v1.83

[garysassano]

See related issue: open-telemetry/opentelemetry-rust#2370

Changes

Fixed the following lint errors:

error: use of deprecated method `opentelemetry_sdk::trace::Builder::with_config`: Config is becoming a private type. Use Builder::with_{config_name}(resource) instead. ex: Builder::with_resource(resource)

error: the following explicit lifetimes could be elided: 'a

error: empty line after doc comment

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)

[cijothomas]

Thank you ❤️

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 55.4%. Comparing base (0c3771a) to head (27217ef).
Report is 1 commits behind head on main.

Additional details and impacted files

@@          Coverage Diff          @@
##            main    #136   +/-   ##
=====================================
  Coverage   55.4%   55.4%           
=====================================
  Files         39      39           
  Lines       6098    6098           
=====================================
  Hits        3381    3381           
  Misses      2717    2717           

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[garysassano]

The deprecation warnings in the Datadog agent sampling example can't be fixed yet because the Datadog pipeline specifically expects a trace::Config in its builder.

While the OpenTelemetry SDK is moving away from Config in favor of using TracerProvider::builder() directly, we need to keep using the deprecated Config methods until the Datadog integration is updated to accept a TracerProvider instead.

For now, we're suppressing the deprecation warnings with #[allow(deprecated)] since this is something that needs to be fixed in the Datadog integration itself.