Switch CI workflow to manual trigger to disable automatic email notifications

[Copilot]

GitHub Actions was sending email notifications on every commit due to automatic workflow triggers. Changed workflow to manual-only execution.

Changes

• Updated .github/workflows/test.yml trigger from commented #on: [push, pull_request] to on: workflow_dispatch
• Added clarifying comment that workflow now requires manual execution

# Only run manually - no automatic triggers
on: workflow_dispatch

The workflow must now be triggered manually from the Actions tab. All test steps and Docker service configuration remain unchanged.

Original prompt

I am getting mails for the every commit i do in the pipecraft branches so I want to turn it off so apply this script if needed so to be able to trun it off in github actions since it is annoying:
name: CI

Only run manually - no automatic triggers

on: workflow_dispatch

jobs:
build:
runs-on: ubuntu-latest

services:
  docker: 
    image: docker:20.10.2-dind
    options: --privileged
    env: 
      DOCKER_TLS_CERTDIR: /certs

steps:
  - name:  Checkout code
    uses: actions/checkout@v2

  - name: Set up Node.js
    uses: actions/setup-node@v2
    with: 
      node-version: "14"

  - name: Install dependencies
    run: |
      yarn install

  - name: Pull Docker container
    run: |
      docker pull pipecraft/cutadapt:4.4

  - name: Run bioinformatics tests
    run: |
      node testData/cutadapt_test.js

  - name: Clean up
    run: docker system prune -f

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[alihkz94]

turning off the email notification