Update dependency FluentAssertions to 7.2.1

Author: renovate[bot]

src/UnitTests/UnitTests.csproj

@@ -21,7 +21,7 @@
     <ProjectReference Include="..\TypedRest.CodeGeneration.Cli\TypedRest.CodeGeneration.Cli.csproj" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="FluentAssertions" Version="7.2.0" />
+    <PackageReference Include="FluentAssertions" Version="7.2.1" />
     <PackageReference Include="Moq" Version="4.20.72" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
     <PackageReference Include="xunit" Version="2.9.3" />