Add support for reading the ruff version from Poetry groups (#127)

Not sure if this is a desired feature since this was requested already
(https://github.com/astral-sh/ruff-action/issues/40#issuecomment-2581207691)
without any sort of response.
Unfortunately Poetry doesn't yet support PEP 735
(https://github.com/python-poetry/poetry/issues/9751) and it doesn't
make sense to add ruff as a project dependency.

.github/workflows/test.yml

@@ -118,6 +118,23 @@ jobs:
           fi
         env:
           RUFF_VERSION: ${{ steps.ruff-action.outputs.ruff-version }}
+  test-default-version-from-pyproject-poetry-groups:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Use default version from pyproject.toml poetry group dependencies
+        id: ruff-action
+        uses: ./
+        with:
+          src: __tests__/fixtures/pyproject-dependency-poetry-project
+          version-file: __tests__/fixtures/pyproject-dependency-poetry-project/pyproject.toml
+      - name: Correct version gets installed
+        run: |
+          if [ "$RUFF_VERSION" != "0.8.3" ]; then
+            exit 1
+          fi
+        env:
+          RUFF_VERSION: ${{ steps.ruff-action.outputs.ruff-version }}
   test-default-version-from-pyproject-optional-dependencies:
     runs-on: ubuntu-latest
     steps:
@@ -259,6 +276,7 @@ jobs:
       - test-default-version-from-pyproject
       - test-default-version-from-pyproject-dev-group
       - test-default-version-from-pyproject-dependency-groups
+      - test-default-version-from-pyproject-poetry-groups
       - test-default-version-from-pyproject-optional-dependencies
       - test-default-version-from-requirements
       - test-semver-range