GitHub Actions: unify whitespace style

.github/workflows/release.yml

@@ -8,6 +8,7 @@ jobs:
     - uses: actions/checkout@v2
       with:
         fetch-depth: 0
+
     - name: Install dependencies
       run: |
         sudo apt update -qq -y
@@ -61,6 +62,7 @@ jobs:
         cp -v dist/*.tar.gz artifacts/
         cp -v dist/*.whl artifacts/
         cp -v deb_dist/*.deb artifacts/
+
     - name: Upload build artifact
       uses: actions/upload-artifact@v1
       with: