Fix version-file input

The input was previously ignored

.github/workflows/test.yml

@@ -51,6 +51,23 @@ jobs:
         with:
           version: ${{ matrix.ruff-version }}
           src: __tests__/fixtures/python-project
+  test-version-from-version-file-pyproject:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Use version from pyproject.toml
+        id: ruff-action
+        uses: ./
+        with:
+          src: __tests__/fixtures/python-project
+          version-file: __tests__/fixtures/pyproject.toml
+      - name: Correct version gets installed
+        run: |
+          if [ "$RUFF_VERSION" != "0.9.3" ]; then
+            exit 1
+          fi
+        env:
+          RUFF_VERSION: ${{ steps.ruff-action.outputs.ruff-version }}
   test-default-version-from-pyproject:
     runs-on: ubuntu-latest
     steps:

__tests__/fixtures/pyproject.toml

@@ -0,0 +1,13 @@
+[project]
+name = "pyython-project"
+version = "0.1.0"
+description = "Add your description here"
+readme = "README.md"
+requires-python = ">=3.12"
+dependencies = [
+    "ruff==0.9.3",
+]
+
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"