Bump Atc.Test and FluentAssertions

Bumps Atc.Test from 1.1.18 to 2.0.16
Bumps FluentAssertions from 7.2.0 to 8.8.0

---
updated-dependencies:
- dependency-name: Atc.Test
  dependency-version: 2.0.16
  dependency-type: direct:production
  update-type: version-update:semver-major
- 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]

src/CurlGenerator.Tests/CurlGenerator.Tests.csproj

@@ -10,8 +10,8 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Atc.Test" Version="1.1.18" />
-    <PackageReference Include="FluentAssertions" Version="7.2.0" />
+    <PackageReference Include="Atc.Test" Version="2.0.16" />
+    <PackageReference Include="FluentAssertions" Version="8.8.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
     <PackageReference Include="Microsoft.OpenApi.Readers" Version="1.6.28" />
     <PackageReference Include="xunit" Version="2.9.3" />