[lint] Fix failure to provide red checks for lint

.github/workflows/lint.yml

@@ -37,7 +37,7 @@ jobs:
       - name: Run flake8
         run: |
           set -eux
-          pip install -q flake8 flake8-bugbear flake8-black docformatter==1.3.0 black==19.3b0
+          pip install -q flake8 flake8-bugbear flake8-black docformatter==1.3.0 black==22.3.0
           python setup.py develop --no-deps  # get our custom flake8 errors
           python -c 'import parlai'
           flake8 --version
@@ -51,6 +51,12 @@ jobs:
           regex: '^(?<filename>.*?):(?<lineNumber>\d+):(?<columnNumber>\d+): (?<errorCode>\w+\d+) (?<errorDesc>.*)'
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      - name: Failure check
+        run: |
+          if [ "$(cat ${GITHUB_WORKSPACE}/output-annotations.txt | wc -l)" != "0" ]
+          then
+            exit 1
+          fi
 
   mypy:
     runs-on: ubuntu-latest