[cicd] merge pylint and flake8 to single step

.woodpecker/lint.yml

@@ -1,14 +1,9 @@
 pipeline:
-  pylint:
+  lint:
     image: fnndsc/python-poetry
     commands:
-    - poetry add pylint
+    - poetry add pylint flake8
     - poetry install
     - find ./app -not -path "./app/orgpython/*" -type f -name "*.py" | xargs poetry run pylint --exit-zero --disable=E0401,W0511
-  flake8:
-    image: fnndsc/python-poetry
-    commands:
-    - poetry add flake8
-    - poetry install
     - poetry run flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
     - poetry run flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics