feat(github-actions): add support for npm version to main branch workflow (#232)

Author: oieduardorabelo

.github/workflows/merge-to-main.yml

@@ -4,6 +4,9 @@ on:
   push:
     branches: [main]
 
+env:
+  NPM_VERSION: latest
+
 jobs:
   build:
     runs-on: ubuntu-latest
@@ -28,6 +31,11 @@ jobs:
         uses: actions/setup-node@v1
         with:
           node-version: ${{ matrix.node-version }}
+      - name: Install latest npm
+        run: |
+          npm install -g npm@$NPM_VERSION &&
+          npm --version &&
+          npm list -g --depth 0
       - run: npm ci
       - run: npm run test-ci
         env: