GitHub Actions: Add Node.js v22 and use runner.os

[cclauss]

Node.js v22 will fail on GitHub Actions and elsewhere unless node-gyp==^10.2.0

• https://github.com/nodejs/node-gyp/releases

GitHub Actions recommendation for detecting the operating system:

• https://docs.github.com/en/actions/writing-workflows/choosing-what-your-workflow-does/store-information-in-variables#detecting-the-operating-system

[cclauss]

Once package.json and package-lock.json have been upgraded to node-gyp==^10.2.0 then these two lines should be reverted back to - run: npm ci to align with AppVeyor.