Add newline at end of GHA test config

Author: ffe4

Diff for: .github/workflows/test.yml

@@ -75,4 +75,4 @@ jobs:
           path: .tox
           key: tox-cache-${{ matrix.tox-environment }}-${{ hashFiles('tox.ini', 'dev-requirements.txt') }}
       - name: run tox
-        run: tox -e ${{ matrix.tox-environment }}
+        run: tox -e ${{ matrix.tox-environment }}