Bump Serilog.Exceptions from 8.1.0 to 8.4.0 in /src/backend

Bumps [Serilog.Exceptions](https://github.com/RehanSaeed/Serilog.Exceptions) from 8.1.0 to 8.4.0.
- [Release notes](https://github.com/RehanSaeed/Serilog.Exceptions/releases)
- [Commits](RehanSaeed/Serilog.Exceptions@8.1.0...8.4.0)

---
updated-dependencies:
- dependency-name: Serilog.Exceptions
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

src/backend/Csrs.Api/Csrs.Api.csproj

@@ -39,7 +39,7 @@
     <PackageReference Include="Serilog.Enrichers.Environment" Version="2.2.0" />
     <PackageReference Include="Serilog.Enrichers.Process" Version="2.0.2" />
     <PackageReference Include="Serilog.Enrichers.Thread" Version="3.1.0" />
-    <PackageReference Include="Serilog.Exceptions" Version="8.1.0" />
+    <PackageReference Include="Serilog.Exceptions" Version="8.4.0" />
     <PackageReference Include="Serilog.Settings.Configuration" Version="3.3.0" />
     <PackageReference Include="Serilog.Sinks.Console" Version="4.0.1" />
     <PackageReference Include="Serilog.Sinks.Seq" Version="5.1.1" />

src/backend/Csrs.Services.FileManager/Csrs.Services.FileManager.csproj

@@ -24,7 +24,7 @@
 		<PackageReference Include="Serilog.Enrichers.Environment" Version="2.2.0" />
 		<PackageReference Include="Serilog.Enrichers.Process" Version="2.0.2" />
 		<PackageReference Include="Serilog.Enrichers.Thread" Version="3.1.0" />
-		<PackageReference Include="Serilog.Exceptions" Version="8.1.0" />
+		<PackageReference Include="Serilog.Exceptions" Version="8.4.0" />
 		<PackageReference Include="Serilog.Sinks.Seq" Version="5.1.1" />
 		<PackageReference Include="Serilog.Sinks.Splunk" Version="3.7.0" />
 		<PackageReference Include="Microsoft.DotNet.UpgradeAssistant.Extensions.Default.Analyzers" Version="0.3.310801">