build(deps): bump FluentAssertions in /integrationtests (#3240)

Bumps [FluentAssertions](https://github.com/fluentassertions/fluentassertions) from 6.5.1 to 6.6.0.
- [Release notes](https://github.com/fluentassertions/fluentassertions/releases)
- [Changelog](https://github.com/fluentassertions/fluentassertions/blob/develop/AcceptApiChanges.ps1)
- [Commits](fluentassertions/fluentassertions@6.5.1...6.6.0)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

integrationtests/IntegrationTests.Shared.Tests/IntegrationTests.Shared.Tests.csproj

@@ -19,7 +19,7 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
     </PackageReference>
     <PackageReference Include="Xunit.StaFact" Version="1.1.11" />
-    <PackageReference Include="FluentAssertions" Version="6.5.1" />
+    <PackageReference Include="FluentAssertions" Version="6.6.0" />
   </ItemGroup>
 
   <ItemGroup>