Update NOTICE: add rearchitecture and renewal bullets, NEWS redirect

[seabbs-bot]

Updates the NOTICE file with two new bullet points documenting significant changes:

• Re-architecture of infection and observation models into a universal prior and latent model framework
• Simplification and recomposition of the renewal infection model

Also adds a footer directing readers to the NEWS file for a complete list of changes per release.

[github-actions]

Try this Pull Request!

Option 1: Julia Package Manager

Open Julia and type:

import Pkg
Pkg.activate(temp=true)
Pkg.add(url="https://github.com/EpiAware/ComposableTuringIDModels.jl", rev="update-notice-jul2026")
using ComposableTuringIDModels

Option 2: Local Checkout

If you have the repo locally:

git checkout update-notice-jul2026
julia --project=. -e "using Pkg; Pkg.instantiate()"