Bump System.Text.Json in /src/Orneholm.SverigesRadio.Api

Bumps System.Text.Json from 8.0.3 to 8.0.4.

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

Signed-off-by: dependabot[bot] <support@github.com>

src/Orneholm.SverigesRadio.Api/Orneholm.SverigesRadio.Api.csproj

@@ -44,7 +44,7 @@
 
     <ItemGroup>
         <PackageReference Include="Microsoft.SourceLink.GitHub" Version="8.0.0" PrivateAssets="all" />
-        <PackageReference Include="System.Text.Json" Version="8.0.3" />
+        <PackageReference Include="System.Text.Json" Version="8.0.4" />
     </ItemGroup>
 
     <ItemGroup>