run-vcpkg@v7.5 - Servicing fixes

Changes:

Fixes for deprecated features for GitHub runners:

• save-state command deprecation: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/
• node12 deprecation: https://github.blog/changelog/2022-09-22-github-actions-all-actions-will-begin-running-on-node16-instead-of-node12/

Note: to keep your workflow up to date with bug and security fixes, just use the v7 branch to stay on the most recent v7.x version of this action, e.g., uses: lukka/run-vcpkg@v7