stamp 0.10.0: upgrade opentelemetry to 0.27

stamp 0.9.0: add http.server.active_requests, http.server.request.bod…

…y.size, fix explicit bucket boundaries, add metric units

Upgrade OTEL version (#9)

* upgrade otel version

* v0.8.0

* update examples for new version

stamp 0.7.1: upgrade tower to 0.5

stamp 0.7.1: upgrade tower to 0.5

stamp 0.7.0: upgrade opentelemetry to 0.25

task: Bump opentelemetry dependencies (#6)

stamp 0.5.0: upgrade opentelemetry to 0.23.0

bump version

stamp 0.4.0: switch to f64 histogram from u64 histogram

stamp 0.3.0: upgrading opentelemetry to 0.22, remove incompatible ope…

…ntelemetry-api dependency

stamp 0.2.1: remove unneeded opentelemetry dependency