clarify pin, changelog

Author: jeremydvoss

sdk/monitor/azure-monitor-opentelemetry-exporter/CHANGELOG.md

@@ -9,6 +9,8 @@
 ### Bugs Fixed
 
 ### Other Changes
+- Unpinned fixedint dependency
+  ([#43475](https://github.com/Azure/azure-sdk-for-python/pull/43475))
 
 ## 1.0.0b44 (2025-10-14)
 

sdk/monitor/azure-monitor-opentelemetry-exporter/setup.py

@@ -84,7 +84,7 @@
     install_requires=[
         "azure-core<2.0.0,>=1.28.0",
         "azure-identity~=1.17",
-        "fixedint~=0.1.6",
+        "fixedint<1.0.0,>=0.1.6",
         "msrest>=0.6.10",
         "opentelemetry-api~=1.35",
         "opentelemetry-sdk~=1.35",