Update branding to 17.15 (#11582)

Author: maridematte

eng/Versions.props

@@ -2,8 +2,8 @@
 <!-- Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the MIT license. See License.txt in the project root for full license information. -->
 <Project>
   <PropertyGroup>
-    <VersionPrefix>17.14.0</VersionPrefix>
-    <PackageValidationBaselineVersion>17.13.0-preview-24611-01</PackageValidationBaselineVersion>
+    <VersionPrefix>17.15.0</VersionPrefix>
+    <PackageValidationBaselineVersion>17.14.0-preview-25161-14</PackageValidationBaselineVersion>
     <AssemblyVersion>15.1.0.0</AssemblyVersion>
     <PreReleaseVersionLabel>preview</PreReleaseVersionLabel>
     <DotNetUseShippingVersions>true</DotNetUseShippingVersions>

src/Tasks/CompatibilitySuppressions.xml

@@ -1,10 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!-- https://learn.microsoft.com/dotnet/fundamentals/package-validation/diagnostic-ids -->
 <Suppressions xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
-  <!-- For ease of logging the "not supported on Core" message, these tasks are a
-       TaskRequiresFramework on netstandard/netcore. Since the type is sealed there,
-       that shouldn't cause any implementation problems since no one can derive
-       from it and try to call TaskExtension.Log. -->
   <Suppression>
     <DiagnosticId>CP0007</DiagnosticId>
     <Target>T:Microsoft.Build.Tasks.AL</Target>
@@ -71,11 +67,6 @@
     <Left>ref/netstandard2.0/Microsoft.Build.Tasks.Core.dll</Left>
     <Right>ref/net472/Microsoft.Build.Tasks.Core.dll</Right>
   </Suppression>
-  <!-- PKV004 for netstandard2.0-supporting TFs that we do not have runtime assemblies for.
-      This is intentional, because you can only use MSBuild in the context of a .NET SDK
-      (on net7.0, as of MSBuild 17.4) or in the context of Visual Studio (net472), but we
-      have previously shipped netstandard2.0 packages, and if you want to support both
-      runtime contexts it still makes sense to target that. -->
   <Suppression>
     <DiagnosticId>PKV004</DiagnosticId>
     <Target>.NETCoreApp,Version=v2.0</Target>

src/Utilities/CompatibilitySuppressions.xml

@@ -1,11 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!-- https://learn.microsoft.com/dotnet/fundamentals/package-validation/diagnostic-ids -->
 <Suppressions xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
-  <!-- PKV004 for netstandard2.0-supporting TFs that we do not have runtime assemblies for.
-       This is intentional, because you can only use MSBuild in the context of a .NET SDK
-       (on net7.0, as of MSBuild 17.4) or in the context of Visual Studio (net472), but we
-       have previously shipped netstandard2.0 packages, and if you want to support both
-       runtime contexts it still makes sense to target that. -->
   <Suppression>
     <DiagnosticId>PKV004</DiagnosticId>
     <Target>.NETCoreApp,Version=v2.0</Target>