Build(deps): Bump System.Text.Json in /src/Files.Core.SourceGenerator

Bumps [System.Text.Json](https://github.com/dotnet/runtime) from 8.0.4 to 8.0.5.
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](dotnet/runtime@v8.0.4...v8.0.5)

---
updated-dependencies:
- dependency-name: System.Text.Json
  dependency-type: direct:production
...

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

Author: dependabot[bot]

src/Files.Core.SourceGenerator/Files.Core.SourceGenerator.csproj

@@ -23,7 +23,7 @@
         <PackageReference Include="Microsoft.CodeAnalysis.Analyzers" Version="3.3.4" PrivateAssets="all" />
         <PackageReference Include="Microsoft.CodeAnalysis.Workspaces.Common" Version="4.11.0" PrivateAssets="all" />
         <PackageReference Include="PolySharp" Version="1.14.1" PrivateAssets="all" IncludeAssets="runtime; build; native; contentfiles; analyzers; buildtransitive" />
-        <PackageReference Include="System.Text.Json" Version="8.0.4" PrivateAssets="all" />
+        <PackageReference Include="System.Text.Json" Version="8.0.5" PrivateAssets="all" />
     </ItemGroup>
 
 </Project>