chore(deps): update Feature Management dependency (#618)

Author: ericpattison

src/OpenFeature.Contrib.Providers.FeatureManagement/OpenFeature.Contrib.Providers.FeatureManagement.csproj

@@ -14,7 +14,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.FeatureManagement" Version="4.0.0" />
+    <PackageReference Include="Microsoft.FeatureManagement" Version="4.4.0" />
     <PackageReference Include="OpenFeature" Version="[2.0,3.0)" />
   </ItemGroup>