Add missing changelog entries for PRs since last release (#355)

Author: aabmass

opentelemetry-exporter-gcp-monitoring/CHANGELOG.md

@@ -2,6 +2,9 @@
 
 ## Unreleased
 
+- Add support for Python 3.12 (#343)
+  ([#343](https://github.com/GoogleCloudPlatform/opentelemetry-operations-python/pull/343))
+
 ## Version 1.6.0a0
 
 Released 2023-10-16

opentelemetry-exporter-gcp-trace/CHANGELOG.md

@@ -2,6 +2,9 @@
 
 ## Unreleased
 
+- Add support for Python 3.12 (#343)
+  ([#343](https://github.com/GoogleCloudPlatform/opentelemetry-operations-python/pull/343))
+
 ## Version 1.6.0
 
 Released 2023-10-16

opentelemetry-propagator-gcp/CHANGELOG.md

@@ -2,6 +2,9 @@
 
 ## Unreleased
 
+- Add support for Python 3.12 (#343)
+  ([#343](https://github.com/GoogleCloudPlatform/opentelemetry-operations-python/pull/343))
+
 ## Version 1.6.0
 
 Released 2023-10-16

opentelemetry-resourcedetector-gcp/CHANGELOG.md

@@ -2,6 +2,19 @@
 
 ## Unreleased
 
+- Implement GAE resource detection
+  ([#351](https://github.com/GoogleCloudPlatform/opentelemetry-operations-python/pull/351))
+- Implement Cloud Run and Cloud Functions faas resource detection
+  ([#346](https://github.com/GoogleCloudPlatform/opentelemetry-operations-python/pull/346))
+- Small fixups for resource detector code and tests
+  ([#345](https://github.com/GoogleCloudPlatform/opentelemetry-operations-python/pull/345))
+- gcp_resource_detector: add missing timeout to requests call
+  ([#344](https://github.com/GoogleCloudPlatform/opentelemetry-operations-python/pull/344))
+- Add support for Python 3.12 (#343)
+  ([#343](https://github.com/GoogleCloudPlatform/opentelemetry-operations-python/pull/343))
+- Don't throw and exception when raise on error is set to false
+  ([#293](https://github.com/GoogleCloudPlatform/opentelemetry-operations-python/pull/293))
+
 ## Version 1.6.0a0
 
 Released 2023-10-16