Reference update.

Author: Oren (electricessence)

source/Open.Collections.csproj

@@ -15,7 +15,7 @@ Part of the "Open" set of libraries.</Description>
     <PackageProjectUrl>https://github.com/electricessence/Open.Collections/</PackageProjectUrl>
     <RepositoryUrl>https://github.com/electricessence/Open.Collections/</RepositoryUrl>
     <RepositoryType>git</RepositoryType>
-    <Version>2.7.1</Version>
+    <Version>2.7.2</Version>
     <PackageReleaseNotes></PackageReleaseNotes>
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
   </PropertyGroup>
@@ -38,7 +38,7 @@ Part of the "Open" set of libraries.</Description>
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Open.Threading" Version="1.5.3" />
+    <PackageReference Include="Open.Threading" Version="1.5.4" />
 	</ItemGroup>
 
 	<ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.0' ">