deps: bump FluentAssertions from 7.0.0 to 8.0.0 in /telemetry/csharp

Bumps [FluentAssertions](https://github.com/fluentassertions/fluentassertions) from 7.0.0 to 8.0.0.
- [Release notes](https://github.com/fluentassertions/fluentassertions/releases)
- [Changelog](https://github.com/fluentassertions/fluentassertions/blob/develop/AcceptApiChanges.ps1)
- [Commits](fluentassertions/fluentassertions@7.0.0...8.0.0)

---
updated-dependencies:
- dependency-name: FluentAssertions
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

telemetry/csharp/AwsToolkit.Telemetry.Events.Generator.Tests/AwsToolkit.Telemetry.Events.Generator.Tests.csproj

@@ -11,7 +11,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="FluentAssertions" Version="7.0.0" />
+    <PackageReference Include="FluentAssertions" Version="8.0.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
     <PackageReference Include="xunit" Version="2.9.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.0.1">

telemetry/csharp/AwsToolkit.Telemetry.Events.Tests/AwsToolkit.Telemetry.Events.Tests.csproj

@@ -11,7 +11,7 @@
 		<Reference Include="System.Core" />
 	</ItemGroup>
   <ItemGroup>
-    <PackageReference Include="FluentAssertions" Version="7.0.0" />
+    <PackageReference Include="FluentAssertions" Version="8.0.0" />
     <PackageReference Include="Moq" Version="4.18.4" />
     <PackageReference Include="xunit" Version="2.9.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.0.1">