This Gist aims to demonstrate having a github action where a job (job3) depends on a skippable job (job2). Play with the run/if conditions on job2 to check the three important outcomes, success, failure, skipped.

ga_needs_skippable_job.yml

name: Github Action skippable job example

on:
  pull_request:
    types: [synchronize]

jobs:
  job1:
    name: Step 1
    runs-on: ubuntu-latest
    steps:
      - name: Step1
        run: echo "Step1"
  
  job2:
    name: Skippable Step
    if: ${{1 == 1}}
    needs: [job1]
    runs-on: ubuntu-latest
    steps:
      - name: Step2
        run: exit 1

  job3:
    name: Require Job 2 to be skipped or succeeded
    needs: [job2]
    # https://stackoverflow.com/a/77066140
    if: always() && !failure() && !cancelled()
    runs-on: ubuntu-latest
    steps:
      - name: Step3
        run: echo "Step3"