fix poetry is not found on windows

Author: mainred

.github/workflows/build-template.yaml

@@ -73,7 +73,7 @@ jobs:
       run: |
         python -m pip install --upgrade pip setuptools pyinstaller
         curl -sSL https://install.python-poetry.org | python3 - --version ${{ env.POETRY_VERSION }}
-        echo "C:\Users\runneradmin\AppData\Roaming\Python\Scripts" | Out-File -FilePath "$env:GITHUB_PATH" -Encoding utf8 -Append
+        Add-Content $env:GITHUB_PATH "C:\Users\runneradmin\AppData\Roaming\Python\Scripts"
 
         poetry config virtualenvs.create false
         poetry install --no-root