Update dependency AutoFixture.NUnit3 to v4.18.1

Author: renovate[bot]

tests/Tests.csproj

@@ -13,7 +13,7 @@
     <PackageReference Include="AutoFixture.AutoNSubstitute" Version="4.17.0" />
     <PackageReference Include="AWSSDK.SecurityToken" Version="3.7.1.18" />
     <PackageReference Include="AWSSDK.S3" Version="3.7.1" />
-    <PackageReference Include="AutoFixture.NUnit3" Version="4.17.0" />
+    <PackageReference Include="AutoFixture.NUnit3" Version="4.18.1" />
     <PackageReference Include="coverlet.collector" Version="3.1.0" PrivateAssets="all" />
     <PackageReference Include="FluentAssertions" Version="5.10.3" />
     <PackageReference Include="Microsoft.Build.Locator" Version="1.5.5" />