Bump FluentAssertions from 7.2.0 to 8.8.0

---
updated-dependencies:
- dependency-name: FluentAssertions
  dependency-version: 8.8.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

Directory.Packages.props

@@ -93,7 +93,7 @@
     <PackageVersion Include="Aspire.Hosting.AppHost" Version="13.0.0" />
     <PackageVersion Include="AngleSharp.Diffing" Version="1.1.1" />
     <PackageVersion Include="DiffPlex" Version="1.9.0" />
-    <PackageVersion Include="FluentAssertions" Version="7.2.0" />
+    <PackageVersion Include="FluentAssertions" Version="8.8.0" />
     <PackageVersion Include="FsUnit.xUnit" Version="7.0.1" />
     <PackageVersion Include="GitHubActionsTestLogger" Version="2.4.1" />
     <PackageVersion Include="JetBrains.Annotations" Version="2024.3.0" />