Take the whole _resolved block instead of ten own-* inputs

[mcocdawc]

Ten own-* lines per call site, six identical copies across eckit/eccodes/ecflow, all
saying "read this field out of matrix._resolved". Now just:

- uses: ecmwf/ci-infrastructure/actions/print-dep-table@main
  with:
    resolved: ${{ toJSON(matrix._resolved) }}

• resolve_deps puts own-name into _resolved, so a workflow no longer restates its own
  package name — and a ci.yml copied between repos can't still say own-name: eckit.
• print_dep_table takes --resolved; the own-* → column mapping lives in one tested dict
  instead of six workflows.
• action.yml: 13 inputs → 4. The inline python -c, the own_arg array and the set -u
  workaround it forced are gone. own-repo and own-source stay — neither is in _resolved.

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