Use FA 8.0.0-alpha.1 in both Core and ApprovalTest projects

Author: jnyrup

Tests/Approval.Tests/Approval.Tests.csproj

@@ -5,7 +5,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="FluentAssertions" Version="7.0.0-alpha.5" />
+    <PackageReference Include="FluentAssertions" Version="8.0.0-alpha.1" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
     <PackageReference Include="xunit" Version="2.9.2" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2">
@@ -14,7 +14,7 @@
     </PackageReference>
     <PackageReference Include="PublicApiGenerator" Version="11.1.0" />
     <PackageReference Include="Verify.DiffPlex" Version="3.1.2" />
-    <PackageReference Include="Verify.Xunit" Version="28.4.0" />
+    <PackageReference Include="Verify.Xunit" Version="28.0.0" />
     <PackageReference Update="CSharpGuidelinesAnalyzer" Version="3.8.5">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>