Update to .NET SDK 9.0.0 and Storage Providers 15.0.0-rc4

Author: ronaldbarendse

Directory.Packages.props

@@ -9,7 +9,7 @@
     <GlobalPackageReference Include="Umbraco.GitVersioning.Extensions" Version="0.2.0" />
   </ItemGroup>
   <PropertyGroup>
-    <UmbracoStorageProvidersPackageVersion>[15.0.0-rc3, 16)</UmbracoStorageProvidersPackageVersion>
+    <UmbracoStorageProvidersPackageVersion>[15.0.0-rc4, 16)</UmbracoStorageProvidersPackageVersion>
   </PropertyGroup>
   <ItemGroup>
     <PackageVersion Include="Umbraco.StorageProviders.AzureBlob" Version="$(UmbracoStorageProvidersPackageVersion)" />

global.json

@@ -1,7 +1,6 @@
 {
   "sdk": {
-    "version": "9.0.100-rc.2.24474.11",
-    "rollForward": "latestFeature",
-    "allowPrerelease": true
+    "version": "9.0.100",
+    "rollForward": "latestFeature"
   }
 }