v0.1.4

Update project files for multi-targeting and dependencies (#6)

* Update project files for multi-targeting and dependencies

- Updated `QuerySample`, `myNOC.EntityFramework.Query`, and `myNOC.Tests.EntityFramework.Query` to target `net8.0` and `net9.0`, with language version set to `13.0`.
- Upgraded `Microsoft.EntityFrameworkCore` and `Microsoft.EntityFrameworkCore.InMemory` packages from `8.0.3` to `9.0.0`.
- Updated copyright year in `myNOC.EntityFramework.Query` from `2023` to `2025`.
- Revised versions of testing-related packages in `myNOC.Tests.EntityFramework.Query`.
- Made minor structural adjustments for consistency in project files.

* Add support for .NET Core 9 in workflows

This commit adds a new step to set up .NET Core 9 in both
the `build-tests.yml` and `release.yml` files, while
retaining the existing setup for .NET Core 8. This update
enables the workflows to support both .NET Core 8 and 9
during build and release processes.