deps: Bump the testing-packages group with 5 updates

Bumps coverlet.collector from 6.0.2 to 6.0.4
Bumps FluentAssertions from 8.6.0 to 8.8.0
Bumps Microsoft.NET.Test.Sdk from 17.12.0 to 18.0.0
Bumps xunit from 2.9.2 to 2.9.3
Bumps xunit.runner.visualstudio from 2.8.2 to 3.1.5

---
updated-dependencies:
- dependency-name: coverlet.collector
  dependency-version: 6.0.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: testing-packages
- dependency-name: FluentAssertions
  dependency-version: 8.8.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: testing-packages
- dependency-name: Microsoft.NET.Test.Sdk
  dependency-version: 18.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: testing-packages
- dependency-name: xunit
  dependency-version: 2.9.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: testing-packages
- dependency-name: xunit.runner.visualstudio
  dependency-version: 3.1.5
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: testing-packages
...

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

Author: dependabot[bot]

Maker.RampEdge.Tests/Maker.RampEdge.Tests.csproj

@@ -16,16 +16,16 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="coverlet.collector" Version="6.0.2" />
-    <PackageReference Include="FluentAssertions" Version="8.6.0" />
+    <PackageReference Include="coverlet.collector" Version="6.0.4" />
+    <PackageReference Include="FluentAssertions" Version="8.8.0" />
     <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="9.0.9" />
     <PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="9.0.9" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.0" />
     <PackageReference Include="Moq" Version="4.20.72" />
     <PackageReference Include="MSTest.TestFramework" Version="3.10.4" />
     <PackageReference Include="RichardSzalay.MockHttp" Version="7.0.0" />
-    <PackageReference Include="xunit" Version="2.9.2" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" />
+    <PackageReference Include="xunit" Version="2.9.3" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5" />
   </ItemGroup>
 
   <ItemGroup>