CI: Update CI to use ruff instead of flake8

Author: effigies

.github/workflows/pythonpackage.yml

@@ -112,9 +112,10 @@ jobs:
     - uses: codecov/codecov-action@v3
       name: Submit to CodeCov
 
-  flake8:
+  style:
     if: "!contains(github.event.head_commit.message, '[skip ci]')"
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
-    - run: pipx run flake8 smriprep
+    - run: pipx run ruff smriprep
+    - run: pipx run ruff format --diff smriprep