update to opentelemetry 0.24

[mellowagain]

fixes #177

Checklist

• Changelog updated

[mellowagain]

tracing-opentelemetry is only on otel 0.23, theres currently a pr open to update it to 0.24: tokio-rs/tracing-opentelemetry#155

once that one is merged and released we can continue with the otel 0.24 upgrade. im pausing this pr for now

[xmakro]

tracing-opentelemtry was updated to 0.25:
tokio-rs/tracing-opentelemetry#156

[mellowagain]

ran into another blocker which seems not that easily solveable, the prometheus-exporter feature depends on opentelemetry_prometheus, which is not updated to the new opentelemetry version and there doesn't even seem to be a plan to do so. on the readme of the project it states

The development of prometheus exporter has halt until the Opentelemetry metrics API and SDK reaches 1.0. Current implementation is based on Opentelemetry API and SDK 0.23.

others people also running into this: open-telemetry/opentelemetry-rust#1950

seems like this will be hard block for a while until opentelemetry reaches 1.0. im not sure if that is going to happen anytime soon, i thought it was blocked until there was consensus on open-telemetry/opentelemetry-rust#1571 but that may be wrong.

we can optionally choose to fork and update opentelemetry_prometheus ourselves but that is additional maintenance burden and wouldn't play well if a user of autometrics includes the opentelemetry_prometheus themselves, as there would be conflicting versions then.

[xmakro]

opentelemetry_prometheus 0.17 was released 🎉