message: ci: also run regression tests less often
diff: name: Regression
  -on: [push, pull_request]
  +on:
  + push:
  + paths-ignore:
  + - '**.md'
  + pull_request:
  + paths-ignore:
  + - '**.md'
  + - 'tools/nodejs/**'
  + - 'tools/rpkg/**'
  + - '.github/workflows/NodeJS.yml'
  + - '.github/workflows/Python.yml'
  + - '.github/workflows/R.yml'
  concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}-${{ github.head_ref || '' }}-${{ github.base_ref || '' }}
  