fixed workflow error

Author: lukestroh

.github/workflows/run_tests.yaml

@@ -27,10 +27,10 @@ jobs:
               with:
                   python-version: ${{ matrix.python-version }}
             - name: Install dependencies
-                run: |
-                    python -m pip install --upgrade pip
-                    pip install .
-                    pip install flake8 black pytest
+              run: |
+                python -m pip install --upgrade pip
+                pip install .
+                pip install flake8 black pytest
             - name: Format with black
               uses: psf/black@stable
               with: