v2.3.0

Maintenance update

• Updated to use v9 API of the Toggl authentication service since v8 has been deprecated (see Toggl deprecation notice)
• Updated the project to .NET 8
• Updated all dependencies to the latest version

What's Changed

• Updated to use the api v9 for toggl by @daren-thomas in #3

New Contributors

• @daren-thomas made their first contribution in #3

Full Changelog: v2.2.0...v2.3.0