chore(deps): update ferrlabs/.github digest to 84f4447

[ferrlabs-renovate]

This PR contains the following updates:

Package	Type	Update	Change
FerrLabs/.github (changelog)	workflow	digest	539e9ac → 84f4447

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[github-actions]

SonarQube — aucune nouvelle issue

_{Comparaison entre le projet bac à sable de cette PR et la branche par défaut : SonarQube Community n'analyse pas les PR, ce delta est calculé côté CI. Détail}

[ferrfleet]

What changed: the only substantive commit in this digest range (FerrLabs/.github 539e9ac → 84f4447, #335) changes reusable-ci-node.yml's pnpm-version input default from '10' to ''. Empty now means pnpm/action-setup reads the pnpm version from the caller's package.json (packageManager or devEngines.packageManager) instead of hardcoding v10.

What breaks here: this repo's package.json has no packageManager field, only engines.pnpm: ">=9.0.0" (a range, not an exact pin), which pnpm/action-setup doesn't read. That's exactly why CI is failing.

Why CI fails: Test / Test & Build and Test / Quality (knip, madge, audit) both fail at the pnpm/action-setup step with: "Unable to determine pnpm version... provide it via the action's version input, or package.json's packageManager / devEngines.packageManager field." This is a real incompatibility introduced by the upstream default change, not a flake or a pre-existing failure.

Blocking: add a packageManager field to package.json (e.g. "packageManager": "pnpm@9.x.x", matching whatever pnpm version this repo currently builds with) before merging, or this and every future PR will fail CI until that's done.