Bump version to 1.9.1 (#409)

Signed-off-by: halspang <[email protected]>

Author: halspang

CHANGELOG.md

@@ -1,6 +1,7 @@
 # Changelog
 
-## v1.9.1 (Unreleased)
+## v1.9.1
+- Add basic orchestration and activity execution logs by @cgillum in ([#405](https://github.com/microsoft/durabletask-dotnet/pull/405))
 - Add default version in `TaskOrchestrationContext` by @halspang in ([#408](https://github.com/microsoft/durabletask-dotnet/pull/408))
 
 ## v1.9.0

eng/targets/Release.props

@@ -17,7 +17,7 @@
   </PropertyGroup>
 
   <PropertyGroup>
-    <VersionPrefix>1.9.0</VersionPrefix>
+    <VersionPrefix>1.9.1</VersionPrefix>
     <VersionSuffix></VersionSuffix>
   </PropertyGroup>