Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires publishpress/wp-browser == 2.6.5.2 (exact version match), found publishpress/wp-browser[2.6.5.2] in the lock file but not in remote repositories, make sure you avoid updating this package to keep the one from the lock file.

Process completed with exit code 2.

Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/checkout@v2. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.