Update to .NET 9 and Umbraco.StorageProviders 15.0.0-rc1

Author: ronaldbarendse

Directory.Build.props

@@ -1,6 +1,6 @@
 <Project>
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <Company>Umbraco HQ</Company>
     <Authors>Umbraco</Authors>
     <Copyright>Copyright © Umbraco $([System.DateTime]::Today.ToString('yyyy'))</Copyright>
@@ -29,8 +29,9 @@
   <!-- Package Validation -->
   <PropertyGroup>
     <GenerateCompatibilitySuppressionFile>false</GenerateCompatibilitySuppressionFile>
-    <EnablePackageValidation>true</EnablePackageValidation>
-    <PackageValidationBaselineVersion>14.0.0</PackageValidationBaselineVersion>
+    <!-- TODO (V15): Re-enable when 15 is released. -->
+    <EnablePackageValidation>false</EnablePackageValidation>
+    <PackageValidationBaselineVersion>15.0.0</PackageValidationBaselineVersion>
     <EnableStrictModeForCompatibleFrameworksInPackage>true</EnableStrictModeForCompatibleFrameworksInPackage>
     <EnableStrictModeForCompatibleTfms>true</EnableStrictModeForCompatibleTfms>
   </PropertyGroup>

Directory.Packages.props

@@ -9,7 +9,7 @@
     <GlobalPackageReference Include="Umbraco.GitVersioning.Extensions" Version="0.2.0" />
   </ItemGroup>
   <PropertyGroup>
-    <UmbracoStorageProvidersPackageVersion>[14.1.0, 15)</UmbracoStorageProvidersPackageVersion>
+    <UmbracoStorageProvidersPackageVersion>[15.0.0-rc1, 16)</UmbracoStorageProvidersPackageVersion>
   </PropertyGroup>
   <ItemGroup>
     <PackageVersion Include="Umbraco.StorageProviders.AzureBlob" Version="$(UmbracoStorageProvidersPackageVersion)" />

global.json

@@ -1,6 +1,7 @@
 {
   "sdk": {
-    "version": "8.0.100-rc.2.23502.2",
-    "rollForward": "latestFeature"
+    "version": "9.0.100-rc.1.24452.12",
+    "rollForward": "latestFeature",
+    "allowPrerelease": true
   }
 }