Update dependency Serilog.Sinks.File to v7

Author: dependencyupdates[bot]

src/ServiceInsight/ServiceInsight.csproj

@@ -57,7 +57,7 @@
     <PackageReference Include="Rx-PlatformServices" Version="2.2.5" />
     <PackageReference Include="Rx-XAML" Version="2.2.5" />
     <PackageReference Include="Serilog" Version="4.0.0" />
-    <PackageReference Include="Serilog.Sinks.File" Version="6.0.0" />
+    <PackageReference Include="Serilog.Sinks.File" Version="7.0.0" />
     <PackageReference Include="Serilog.Sinks.Observable" Version="3.0.0" />
     <PackageReference Include="Serilog.Sinks.Trace" Version="4.0.0" />
     <PackageReference Include="System.Reflection.Metadata" Version="8.0.0" />