Bump immutable collections and objectpool packages to 8.0.0

eng/Version.Details.xml

@@ -119,11 +119,11 @@
     <!-- Necessary for source-build. This allows Microsoft.Extensions.ObjectPool and System.Collections.Immutable packages
          to be retrieved from live source-build and their content consumed by packages produced by razor.
          Without these entries, due to PVP flow work, SBRP packages would be consumed causing runtime issue. -->
-    <Dependency Name="Microsoft.Extensions.ObjectPool" Version="6.0.0">
+    <Dependency Name="Microsoft.Extensions.ObjectPool" Version="8.0.0">
       <Uri>https://github.com/dotnet/aspnetcore</Uri>
       <Sha>ae1a6cbe225b99c0bf38b7e31bf60cb653b73a52</Sha>
     </Dependency>
-    <Dependency Name="System.Collections.Immutable" Version="6.0.0">
+    <Dependency Name="System.Collections.Immutable" Version="8.0.0">
       <Uri>https://github.com/dotnet/runtime</Uri>
       <Sha>4822e3c3aa77eb82b2fb33c9321f923cf11ddde6</Sha>
     </Dependency>

eng/Versions.props

@@ -78,8 +78,8 @@
       Exception - Microsoft.Extensions.ObjectPool and System.Collections.Immutable packages are not updated by automation,
       but are present in Version.Details.xml for source-build PVP flow. See the comment in Version.Details.xml for more information.
     -->
-    <MicrosoftExtensionsObjectPoolPackageVersion>6.0.0</MicrosoftExtensionsObjectPoolPackageVersion>
-    <SystemCollectionsImmutablePackageVersion>6.0.0</SystemCollectionsImmutablePackageVersion>
+    <MicrosoftExtensionsObjectPoolPackageVersion>8.0.0</MicrosoftExtensionsObjectPoolPackageVersion>
+    <SystemCollectionsImmutablePackageVersion>8.0.0</SystemCollectionsImmutablePackageVersion>
   </PropertyGroup>
   <!--
 

src/Razor/src/Microsoft.VisualStudio.RazorExtension/AssemblyBindingRedirects.cs

@@ -36,8 +36,8 @@ using Microsoft.VisualStudio.Shell;
     GenerateCodeBase = true,
     PublicKeyToken = "adb9793829ddae60",
     OldVersionLowerBound = "0.0.0.0",
-    OldVersionUpperBound = "6.0.0.0",
-    NewVersion = "6.0.0.0")]
+    OldVersionUpperBound = "8.0.0.0",
+    NewVersion = "8.0.0.0")]
 [assembly: ProvideBindingRedirection(
     AssemblyName = "Microsoft.Extensions.Options",
     GenerateCodeBase = true,