Merge in 'release/3.1' changes

Author: dotnet-bot

eng/Versions.props

@@ -1,7 +1,7 @@
 <Project>
   <PropertyGroup>
     <!-- The .NET Core product branding version -->
-    <ProductVersion>3.1.25</ProductVersion>
+    <ProductVersion>3.1.26</ProductVersion>
     <!-- We need to move to 4.7 as part of our versioning change when we switch to arcade to avoid downgrading versions -->
     <MajorVersion>4</MajorVersion>
     <MinorVersion>7</MinorVersion>