Update build_release.yml

[GoobyFRS]

This pull request updates the build and release workflow to automatically include the application version in the build artifact names and release assets. This makes it easier to identify and track releases by version.

Build and Release Process Improvements:

• The workflow now determines the application version by reading the APP_VERSION variable from goobyddns/app.py and sets it as an environment variable for the rest of the build steps.
• The executable built by PyInstaller is now named GoobyDDNS-<APP_VERSION>.exe instead of a generic name, ensuring the version is reflected in the filename.
• The release payload and uploaded artifacts use the versioned filename, so each build artifact is uniquely identified by its version.
• The GitHub release name and attached files now include the application version, providing clearer release information for users.Append version number to build release