[Tech] Bump codecov/codecov-action from 5 to 7 - #2987

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/cache@v4, docker/build-push-action@v6, pozetroninc/github-action-get-latest-release@master. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/