Fix JMH benchmarking

[schlosna]

Before this PR

./gradlew jmh did not work

After this PR

==COMMIT_MSG== ./gradlew jmh works ==COMMIT_MSG==

Benchmark                             (observability)  Mode  Cnt      Score      Error  Units
TracingBenchmark.nestedSpans            DO_NOT_SAMPLE  avgt   10    494.292 ±   43.218  ns/op
TracingBenchmark.nestedSpans                UNDECIDED  avgt   10    748.402 ±   36.206  ns/op
TracingBenchmark.nestedSpans                   SAMPLE  avgt   10  30336.603 ± 5844.814  ns/op
TracingBenchmark.traceWithSingleSpan    DO_NOT_SAMPLE  avgt   10    121.955 ±   18.840  ns/op
TracingBenchmark.traceWithSingleSpan        UNDECIDED  avgt   10    124.761 ±   18.362  ns/op
TracingBenchmark.traceWithSingleSpan           SAMPLE  avgt   10    368.724 ±   76.932  ns/op

Possible downsides?

[changelog-app[bot]]

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• improvement: An incremental improvement in the functionality or operation of the service.
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Type

• [ ] Feature
• [ ] Improvement
• [x] Fix
• [ ] Break
• [ ] Deprecation
• [ ] Manual task
• [ ] Migration

Description ./gradlew jmh works

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