.github/workflows/build.yml in hackerone-client-0.15.0 vs .github/workflows/build.yml in hackerone-client-0.16.0

@@ -1,19 +1,35 @@
 name: Build + Test
-on: [push]
+on: [pull_request]
 
 jobs:
   build:
     name: Build + Test
     runs-on: ubuntu-latest
-
+    strategy:
+      matrix:
+        ruby: [ '2.4', '2.5', '2.6', '2.7']
     steps:
-    - uses: actions/checkout@master
-    - name: Set up Ruby 2.6
-      uses: actions/setup-ruby@v1
-      with:
-        version: 2.6.x
-    - name: Build and test with Rake
-      run: |
-        gem install bundler --version '1.0.0'
-        bundle install --jobs 4 --retry 3
-        bundle exec rake spec
+      - uses: actions/checkout@master
+      - name: Set up Ruby ${{ matrix.ruby }}
+        uses: actions/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+      - name: Build and test with Rake with Ruby ${{ matrix.ruby }}
+        run: |
+          gem install bundler
+          bundle install --jobs 4 --retry 3
+          bundle exec rake spec
+  lint:
+    name: Rubocop
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@master
+      - name: Set up Ruby 2.6
+        uses: actions/setup-ruby@v1
+        with:
+          ruby-version: 2.6
+      - name: Run linters
+        run: |
+          gem install bundler
+          bundle install --jobs 4 --retry 3
+          bundle exec rake rubocop