Only run sdist build after wheel builds are uploaded

This commit changes the configuration of the deploy workflow to install
the sdist last. Publishing the sdist first causes disruption for
downstream projects that are using qiskit aer in CI as pip will eagerly
try to download the latest version even if only an sdist is present for
it. To avoid disruption for downstream users this updates the sdist job
to run only after we've uploaded the wheels for the tier 1 platforms to
pypi (which is what most people are running in CI).

.github/workflows/deploy.yml

@@ -94,6 +94,7 @@ jobs:
   sdist:
     name: Publish qiskit-aer sdist
     runs-on: ubuntu-latest
+    needs: [publish-shared-wheels]
     environment: release
     permissions:
       id-token: write