Update dependency FluentAssertions to v6

Author: renovate[bot]

tests/Tests.csproj

@@ -8,7 +8,7 @@
     <ItemGroup>
         <PackageReference Include="AutoFixture.AutoNSubstitute" Version="4.18.0" />
         <PackageReference Include="AutoFixture.NUnit3" Version="4.18.0" />
-        <PackageReference Include="FluentAssertions" Version="5.10.3" />
+        <PackageReference Include="FluentAssertions" Version="6.10.0" />
         <PackageReference Include="MockQueryable.NSubstitute" Version="5.0.2" />
         <PackageReference Include="NSubstitute" Version="4.2.2" />
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.11.0" />

tests/packages.lock.json

@@ -30,9 +30,9 @@
       },
       "FluentAssertions": {
         "type": "Direct",
-        "requested": "[5.10.3, )",
-        "resolved": "5.10.3",
-        "contentHash": "gVPEVp1hLVqcv+7Q2wiDf7kqCNn7+bQcQ0jbJ2mcRT6CeRoZl1tNkqvzSIhvekyldDptk77j1b03MXTTRIqqpg==",
+        "requested": "[6.10.0, )",
+        "resolved": "6.10.0",
+        "contentHash": "Da3YsiRDnOHKBfxutjnupL1rOX0K/jnG6crn5AgwukeqZ/yi+HNCOFshic01ke0ztZFWzpfQMXH8fO9aAbG0Gw==",
         "dependencies": {
           "System.Configuration.ConfigurationManager": "4.4.0"
         }