Update to latest Umbraco v10 preview

Author: ronaldbarendse

src/Directory.Build.props

@@ -11,9 +11,14 @@
         <PackageTags>umbraco storage</PackageTags>
     </PropertyGroup>
     <ItemGroup>
+        <Content Include="packages.lock.json" Visible="false" />
         <None Include="$(MSBuildThisFileDirectory)/../icon.png" Pack="true" PackagePath="/" Visible="false" />
     </ItemGroup>
 
+    <PropertyGroup>
+        <RestoreAdditionalProjectSources>https://www.myget.org/F/umbraconightly/api/v3/index.json</RestoreAdditionalProjectSources>
+    </PropertyGroup>
+
     <!-- SourceLink -->
     <PropertyGroup>
         <PublishRepositoryUrl>true</PublishRepositoryUrl>

src/Umbraco.StorageProviders.AzureBlob/Umbraco.StorageProviders.AzureBlob.csproj

@@ -1,14 +1,14 @@
 <Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
-        <TargetFramework>net5.0</TargetFramework>
+        <TargetFramework>net6.0</TargetFramework>
         <Nullable>enable</Nullable>
         <AnalysisMode>AllEnabledByDefault</AnalysisMode>
         <GenerateDocumentationFile>true</GenerateDocumentationFile>
         <Description>Azure Blob Storage provider for Umbraco CMS</Description>
         <PackageTags>umbraco storage azure blob</PackageTags>
     </PropertyGroup>
     <ItemGroup>
-        <PackageReference Include="Umbraco.Cms.Web.Common" Version="9.3.0" />
+        <PackageReference Include="Umbraco.Cms.Web.Common" Version="10.0.0-preview20220405.88864" />
         <PackageReference Include="SixLabors.ImageSharp.Web.Providers.Azure" Version="1.0.5" />
         <PackageReference Include="Azure.Storage.Blobs" Version="12.11.0" />
 		<ProjectReference Include="..\Umbraco.StorageProviders\Umbraco.StorageProviders.csproj" />