Update changelog.

open-telemetry · May 5, 2023 · eea010b · eea010b
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -35,6 +35,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   ([#1738](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1738))
 - Fix `None does not implement middleware` error when there are no middlewares registered
   ([#1766](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1766))
+- Fix `Invalid type NoneType for attribute X  (opentelemetry-instrumentation-aws-lambda)` error when some attributes do not exist
+  ([#1780](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1780))
 
 ## Version 1.17.0/0.38b0 (2023-03-22)