- update to 1.23.0:
* Use Attribute rather than boundattribute in logrecord
* Fix flush error when no LoggerProvider configured for
LoggingHandler
* Fix `OTLPMetricExporter` ignores `preferred_aggregation`
property
* Logs: set `observed_timestamp` field
* Add missing Resource SchemaURL in OTLP exporters
* Fix loglevel warning text
* Prometheus Exporter string representation for target_info
labels
* Logs: ObservedTimestamp field is missing in console exporter
output
* Fix explicit bucket histogram aggregation
* Add `code.lineno`, `code.function` and `code.filepath` to all
logs
* Add Synchronous Gauge instrument
* Drop support for 3.7
* Include key in attribute sequence warning
* Upgrade markupsafe, Flask and related dependencies to dev and
test environments
* Handle HTTP 2XX responses as successful in OTLP exporters
* Improve Resource Detector timeout messaging
* Add Proxy classes for logging
* Remove dependency on 'backoff' library