Bump the dotnet group (#45308)

Bumps the dotnet group in /docs/core/extensions/snippets/http/named with 2 updates: [Microsoft.Extensions.Hosting](https://github.com/dotnet/runtime) and [Microsoft.Extensions.Http](https://github.com/dotnet/runtime).


Updates `Microsoft.Extensions.Hosting` from 9.0.2 to 9.0.3
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](dotnet/runtime@v9.0.2...v9.0.3)

Updates `Microsoft.Extensions.Http` from 9.0.2 to 9.0.3
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](dotnet/runtime@v9.0.2...v9.0.3)

---
updated-dependencies:
- dependency-name: Microsoft.Extensions.Hosting
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: dotnet
- dependency-name: Microsoft.Extensions.Http
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: dotnet
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]