Bump FluentAssertions from 6.3.0 to 6.7.0 (#87)

Bumps [FluentAssertions](https://github.com/fluentassertions/fluentassertions) from 6.3.0 to 6.7.0.
- [Release notes](https://github.com/fluentassertions/fluentassertions/releases)
- [Changelog](https://github.com/fluentassertions/fluentassertions/blob/develop/AcceptApiChanges.ps1)
- [Commits](fluentassertions/fluentassertions@6.3.0...6.7.0)

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

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

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

src/Whim.CommandPalette.Tests/Whim.CommandPalette.Tests.csproj

@@ -34,7 +34,7 @@
 			<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
 			<PrivateAssets>all</PrivateAssets>
 		</PackageReference>
-		<PackageReference Include="FluentAssertions" Version="6.3.0" />
+		<PackageReference Include="FluentAssertions" Version="6.7.0" />
 		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.11.0" />
 		<PackageReference Include="Moq" Version="4.16.1" />
 		<PackageReference Include="xunit" Version="2.4.1" />

src/Whim.TreeLayout.Tests/Whim.TreeLayout.Tests.csproj

@@ -34,7 +34,7 @@
 					<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
 					<PrivateAssets>all</PrivateAssets>
 				</PackageReference>
-		<PackageReference Include="FluentAssertions" Version="6.3.0" />
+		<PackageReference Include="FluentAssertions" Version="6.7.0" />
 		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
 		<PackageReference Include="Moq" Version="4.16.1" />
 		<PackageReference Include="xunit" Version="2.4.1" />