ci: Move always() from step to job so cleanup happens on failures

The `if: always()` can work on steps as well, but in this case we need
it at the job level so it modifies the `needs` clause.

See: https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#example-not-requiring-successful-dependent-jobs

.github/workflows/spectesting.yml

@@ -78,10 +78,9 @@ jobs:
     runs-on: self-hosted
     name: Cleanup Post Vagrant-Spec Tests
     needs: spec-tests
+    if: always()
     steps:
       - name: Clean Packet
-        if: always()
         run: ./.ci/spec/clean-packet.sh
       - name: Clean Workspace
-        if: always()
         run: rm -rf ${{ github.workspace }}