build(deps): bump System.Text.Json from 6.0.2 to 6.0.3

Bumps [System.Text.Json](https://github.com/dotnet/runtime) from 6.0.2 to 6.0.3.
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](dotnet/runtime@v6.0.2...v6.0.3)

---
updated-dependencies:
- dependency-name: System.Text.Json
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

tests/bunit.testassets/bunit.testassets.csproj

@@ -18,7 +18,7 @@
 	<ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.1'">
 		<PackageReference Include="Microsoft.Extensions.Localization.Abstractions" Version="$(DotNet3Version)" />
 		<PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.Authentication" Version="3.2.1" />
-		<PackageReference Include="System.Text.Json" Version="6.0.2" />
+		<PackageReference Include="System.Text.Json" Version="6.0.3" />
 	</ItemGroup>
 	<ItemGroup Condition="'$(TargetFramework)' == 'net5.0'">
 		<PackageReference Include="Microsoft.Extensions.Localization.Abstractions" Version="$(DotNet5Version)" />