Update CHANGELOG

Author: utpilla

opentelemetry-sdk/CHANGELOG.md

@@ -7,6 +7,7 @@
 - Improved `LoggerProvider` shutdown handling to prevent redundant shutdown calls when `drop` is invoked. [#2195](https://github.com/open-telemetry/opentelemetry-rust/pull/2195)
 - **BREAKING**: [#2217](https://github.com/open-telemetry/opentelemetry-rust/pull/2217)
   - **Replaced**: Removed `{Delta,Cumulative}TemporalitySelector::new()` in favor of directly using `Temporality` enum to simplify the configuration of MetricExporterBuilder with different temporalities.
+- When creating new metric instruments, SDK would return a no-op instrument if the validation fails. [#2166](https://github.com/open-telemetry/opentelemetry-rust/pull/2166)
 
 ## v0.26.0
 Released 2024-Sep-30

opentelemetry/CHANGELOG.md

@@ -8,6 +8,8 @@
 - Introduced `SyncInstrument` trait to replace the individual synchronous instrument traits (`SyncCounter`, `SyncGauge`, `SyncHistogram`, `SyncUpDownCounter`) which are meant for SDK implementation. [#2207](https://github.com/open-telemetry/opentelemetry-rust/pull/2207)
 - Ensured that `observe` method on asynchronous instruments can only be called inside a callback. This was done by removing the implementation of `AsyncInstrument` trait for each of the asynchronous instruments. [#2210](https://github.com/open-telemetry/opentelemetry-rust/pull/2210)
 - Removed `PartialOrd` and `Ord` implementations for `KeyValue`. [#2215](https://github.com/open-telemetry/opentelemetry-rust/pull/2215)
+- Remove `try_init` methods from the instrument builders. Users should only use `init` method to create instruments. [#2227](https://github.com/open-telemetry/opentelemetry-rust/pull/2227)
+- Updated the return types of `InstrumentProvider` trait methods to return the instrument instead of a `Result`. [#2227](https://github.com/open-telemetry/opentelemetry-rust/pull/2227)
 
 ## v0.26.0
 Released 2024-Sep-30