Merge pull request #139 from MPoL-dev/pre_release_workflow_reorder

pre-release.yml: move linter after mpol install

.github/workflows/pre-release.yml

@@ -48,19 +48,19 @@ jobs:
       - name: Install dependencies
         run: |
           pip install --upgrade pip
+      - name: Install vanilla package
+        run: |
+          pip install .
+      - name: Install test deps
+        run: |
+          pip install .[test]
       - name: Lint with flake8
         run: |
           pip install flake8
           # stop the build if there are Python syntax errors or undefined names
           flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
           # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
           flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
-      - name: Install vanilla package
-        run: |
-          pip install .
-      - name: Install test deps
-        run: |
-          pip install .[test]
       - name: Cache/Restore the .mpol folder cache
         uses: actions/cache@v3
         env: