Bump the all group with 1 update (#87)

Bumps FluentAssertions from 8.3.0 to 8.4.0

---
updated-dependencies:
- dependency-name: FluentAssertions
  dependency-version: 8.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: all
...

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

Author: dependabot[bot]

src/Directory.Packages.props

@@ -5,7 +5,7 @@
   <ItemGroup>
     <PackageVersion Include="BenchmarkDotNet" Version="0.15.2" />
     <PackageVersion Include="DotNet.ReproducibleBuilds" Version="1.2.25" />
-    <PackageVersion Include="FluentAssertions" Version="8.3.0" />
+    <PackageVersion Include="FluentAssertions" Version="8.4.0" />
     <PackageVersion Include="GitHubActionsTestLogger" Version="2.4.1" />
     <PackageVersion Include="H.Resources.Generator" Version="1.8.0">
       <PrivateAssets>all</PrivateAssets>