WIP: CI: Update Codecov Github Action to v5

[un-def]

It's expected to fail

[un-def]

As expected,

info - 2026-01-11 06:40:40,557 -- ci service found: github-actions
warning - 2026-01-11 06:40:40,566 -- No config file could be found. Ignoring config.
warning - 2026-01-11 06:40:40,598 -- xcrun is not installed or can't be found.
warning - 2026-01-11 06:40:40,611 -- No gcov data found.
info - 2026-01-11 06:40:40,612 -- Generating coverage.xml report in /home/runner/work/hererocks/hererocks
info - 2026-01-11 06:40:40,814 -- Wrote XML report to coverage.xml
info - 2026-01-11 06:40:40,844 -- Found 1 coverage files to report
info - 2026-01-11 06:40:40,844 -- > /home/runner/work/hererocks/hererocks/coverage.xml
info - 2026-01-11 06:40:41,095 -- Process Upload complete
error - 2026-01-11 06:40:41,095 -- Upload failed: {"message":"Token required because branch is protected"}

https://docs.codecov.com/docs/codecov-tokens