check if there is changes in packages before installing dependencies

.github/workflows/publish.yml

@@ -17,15 +17,15 @@ jobs:
  with:
  node-version: '14.x'
  registry-url: 'https://registry.npmjs.org'
- - name: Install dependencies and build 🔧
- run: yarn install --frozen-lockfile
  - name: Ensure that "lerna version" has been run
  run: |
  changed=$(yarn run --silent changed)
  if [ -n "$changed" ]; then
  echo "Error: Found changed packages. Please run 'yarn run version' before pushing changes." >&2
  exit 1
  fi
+ - name: Install dependencies and build 🔧
+ run: yarn install --frozen-lockfile
  - name: Publish package on NPM 📦
  run: yarn run lerna publish from-package --yes --dist-tag experimental
  env: