Simple workflow to print a GitHub Secret because GitHub doesn't offer this feature yet

print-github-secret.yaml

name: "Echo GitHub secret"

on:
  push:
    branches:
      - "main"

jobs:
  print-github-secret:
    runs-on: "ubuntu-latest"
    steps:
      - name: "Check out the repo"
        uses: "actions/checkout@v2"
      - name: "Print the GitHub secret"
        run: "echo ${{ secrets.YOUR_SECRET }} | sed 's/./& /g'"