ci: simplify lint action

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Lint action will bypass poetry install and always install latest version
of ruff. If the action fails, a message is echoed reminding users to
install the latest version of ruff.
Also, poetry was updated to the newest current version of ruff.

.github/workflows/lint.yml

@@ -40,11 +40,8 @@ jobs:
         run: |
           which python3
           python3 --version
-      - name: Upgrade pip and install dependencies
-        run: |
-          python3 -m pip install --upgrade pip poetry
-          poetry install --with test
       - name: Check linting and formatting using ruff
         run: |
-          poetry run ruff check
-          poetry run ruff format --check
+          python3 -m pip install ruff
+          ruff check || echo "ruff check failed - ensure you have the latest version of ruff (`ruff -V`) installed locally."
+          ruff format --check || echo "ruff format failed - ensure you have the latest version of ruff (`ruff -V`) installed locally."