fix(deps): update rust crate tonic-tracing-opentelemetry to 0.21.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
tonic-tracing-opentelemetry (source)	dependencies	minor	0.19.0 -> 0.21.0

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Release Notes

davidB/tracing-opentelemetry-instrumentation-sdk (tonic-tracing-opentelemetry)

v0.21.1

Compare Source

Fixed

• 🐛 workaround for a delay, batch,... behavior in otlp exporter and test with fake-opentelemetry-collector (closed too early)
• 🐛 fix build of contributions (upgrade of opentelemetry, fake collector for logs,...)
• 🐛 Re-export tracing_level_info feature from axum to sdk (#​147)

Changed

• 💄 update deprecated syntax "default_features" in Cargo.toml
• ⬆️ upgrade to rstest 0.22

v0.21.0

Compare Source

Added

• (deps) upgrade to opentelemetry 0.25
• add a troubleshot section
• [breaking] disable resourcedetector (os,...) until update for new version of opentelemetry
• [breaking] disable support of xray (until update for new version of opentelemetry)

v0.20.0

Compare Source

Fixed

• 🐛 fix build of contributions (upgrade of opentelemetry, fake collector for logs,...)

Changed

• ⬆️ upgrade to rstest 0.22
• ⬆️ upgrade to opentelemetry 0.24 (and related dependencies) (#​151)

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