Update CI 4.1.9 to Ci 4.2.1 via composer

thank for help kenjis but I hit another roadblock. I went with the CLI solution. Script stopped with the below

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* STAGING *
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Updating files: 100% (8002/8002), done.
Switched to a new branch 'tatter/scratch'
cp: cannot stat 'vendor/codeigniter4/framework/app/': No such file or directory

now on this new branch it had not done anything. Below are the steps I did.

1. Install the tatter/patches library and commit to make it a clean branch.
2. Update composer (to CI 4.2.1)
3. Run the CLI script (./vendor/bin/patch -v 4.2.1)