3.0.0-preview1

Breaking changes

• Remove netcoreapp3.1 support, see issue #2262 for details.
• Remove net5.0 support from Microsoft.Identity.Web.UI, see issue #2711 for details.

New features

• Microsoft.Identity.Web can be conditionally built on .net9.0-preview, see issue #2702 for details.
• Microsoft.Identity.Web nows processes the AcceptHeader and ContentType if provided, see issue #2806 for details.
• Target Microsoft.IdentityModel 7x in OWIN targets, see issue #2785 for details.