Update npm library previously published by Github Action

Question

I used the following code

name: Node.js Package


on:
  workflow_dispatch

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - uses: actions/setup-node@v2
        with:
          node-version: '16.x'
      - run: npm ci
      - run: npm test

  publish-gpr:
    needs: build
    runs-on: ubuntu-latest
    permissions:
      packages: write
      contents: read
    steps:
      - uses: actions/checkout@v2
      - uses: actions/setup-node@v2
        with:
          node-version: 12
          registry-url: https://npm.pkg.github.com/
      - run: npm ci
      - run: npm publish
        env:
          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}

as .yml file to publish my custom python package in npm. All the project is in a github repository, so the mentioned code triggered a Github Action.

Now I want to just update the package based on the few changes I've done in the py code.

Do you know how to adapt the .yml I showed to just update the package version in npm?

Thanks! Gian