ci: simplify QA checks to avoid potential hangs

.gitea/workflows/deploy.yml

@@ -124,13 +124,12 @@ jobs:
           echo "//${{ vars.REGISTRY_HOST || 'npm.infra.mintel.me' }}/:_authToken=${{ secrets.REGISTRY_PASS }}" >> .npmrc
       - name: Install dependencies
         run: pnpm install --frozen-lockfile
-      - name: 🧪 Parallel Checks
+      - name: 🧪 QA Checks
         if: github.event.inputs.skip_checks != 'true'
         run: |
-          pnpm lint &
-          pnpm typecheck &
-          pnpm test &
-          wait
+          pnpm lint
+          pnpm typecheck
+          pnpm test
 
   # ──────────────────────────────────────────────────────────────────────────────
   # JOB 3: Build & Push