The shared plugin-ci.yaml now uses Corepack when packageManager field
is set, avoiding the 'Multiple versions of pnpm specified' error.
Co-Authored-By: Paperclip <noreply@paperclip.ing>
Pins pnpm@10.32.1 via the packageManager field. This allows
pnpm/action-setup@v4 to resolve the version from package.json instead
of relying on `version: latest`, preventing silent breakage on major
pnpm version bumps.
Fixes: PRI-674
Co-Authored-By: Paperclip <noreply@paperclip.ing>