chore: Update PyPI token references in README and workflow

- Changed the PyPI API token reference in README.md to `POETRY_PYPI_TOKEN_PYPI`.
- Updated the environment variable in publish-pypi.yml to use the new token name for consistency in publishing workflows.

Author: johnnyhuy

.github/workflows/publish-pypi.yml

@@ -78,5 +78,5 @@ jobs:
       - name: Build and publish to PyPI
         if: steps.check-release.outputs.release_found == 'true'
         env:
-          PYPI_API_TOKEN: ${{ secrets.PYPI_API_TOKEN }}
+          POETRY_PYPI_TOKEN_PYPI: ${{ secrets.POETRY_PYPI_TOKEN_PYPI }}
         run: task publish-pypi

README.md

@@ -305,7 +305,7 @@ This repository uses GitHub Actions workflows for continuous integration, releas
 To enable these workflows, ensure the following secrets are set in your repository:
 
 1. For PyPI publishing:
-   - `PYPI_API_TOKEN`: A PyPI API token with upload permissions
+   - `POETRY_PYPI_TOKEN_PYPI`: A PyPI API token with upload permissions
 
 2. For Docker publishing:
    - GitHub Token with `packages:write` permission (automatic)