Update example and optional dependencies

[jtescher]

No description provided.

[codecov]

Codecov Report

Merging #568 (7347a59) into main (dc7d81f) will decrease coverage by 0.2%.
The diff coverage is 62.5%.

@@           Coverage Diff           @@
##            main    #568     +/-   ##
=======================================
- Coverage   54.7%   54.4%   -0.3%     
=======================================
  Files         98      99      +1     
  Lines       8576    8642     +66     
=======================================
+ Hits        4694    4708     +14     
- Misses      3882    3934     +52     

Impacted Files	Coverage Δ
opentelemetry-datadog/src/lib.rs	92.4% <ø> (ø)
opentelemetry-http/src/lib.rs	0.0% <0.0%> (ø)
opentelemetry-zipkin/src/lib.rs	100.0% <ø> (ø)
opentelemetry/src/trace/mod.rs	50.0% <ø> (ø)
opentelemetry-jaeger/src/lib.rs	92.1% <33.3%> (-2.0%)	⬇️
opentelemetry/src/trace/span_context.rs	89.4% <68.4%> (-2.4%)	⬇️
opentelemetry-aws/src/lib.rs	91.0% <73.3%> (-2.3%)	⬇️
opentelemetry/src/sdk/trace/tracer.rs	85.9% <100.0%> (ø)
opentelemetry/src/context.rs	92.1% <0.0%> (-0.8%)	⬇️
opentelemetry-otlp/src/span.rs	0.0% <0.0%> (ø)

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[TommyCpp]

Looks good 👍