Workflow updates

[evoactivity]

• Add workflow_dispatch: so we can run manually
• Update branches it activates for to master
  

  ember-language-server/.github/workflows/ci.yml

  Line 6 in 3b9d0f5

  - component-context-info-origin

• Update to use standard secrets.GITHUB_TOKEN
  

  ember-language-server/.github/workflows/ci.yml

  Line 131 in 3b9d0f5

  GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}