Version update.

Author: Oren (electricessence)

Open.Hierarchy.csproj

@@ -34,9 +34,9 @@ Validated mapping optimization.</PackageReleaseNotes>
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Open.Disposable" Version="1.1.0" />
-    <PackageReference Include="Open.Disposable.ObjectPools" Version="2.1.1" />
-    <PackageReference Include="Open.Numeric" Version="1.2.0" />
+    <PackageReference Include="Open.Disposable" Version="1.2.1" />
+    <PackageReference Include="Open.Disposable.ObjectPools" Version="2.1.3" />
+    <PackageReference Include="Open.Numeric" Version="1.2.1" />
   </ItemGroup>
 
 </Project>